diff --git a/native-bridge/src/effects/granular_delay.rs b/native-bridge/src/effects/granular_delay.rs
index 39e46556..dd14480d 100644
--- a/native-bridge/src/effects/granular_delay.rs
+++ b/native-bridge/src/effects/granular_delay.rs
@@ -133,7 +133,7 @@ impl GranularDelay {
         // Find inactive grain slot index
         let slot_idx = self.grains.iter().position(|g| !g.active);
         if let Some(idx) = slot_idx {
-            let delay_samples = (self.sample_rate as f32 * self.settings.delay_time / 1000.0) as usize;
+            let delay_samples = (self.sample_rate as f32 * self.settings.position / 1000.0) as usize;
             let grain_size = self.window.len();
 
             // Add texture randomization (generate randoms before borrowing grain)
diff --git a/native-bridge/src/effects/harmonizer.rs b/native-bridge/src/effects/harmonizer.rs
index 61aca28c..7a057a3c 100644
--- a/native-bridge/src/effects/harmonizer.rs
+++ b/native-bridge/src/effects/harmonizer.rs
@@ -3,7 +3,7 @@
 //! Creates up to 3 additional voices at scale-correct intervals.
 
 use super::pitch::{key_to_offset, PitchDetector, PitchShifter, Scale};
-use super::types::{HarmonizerSettings, HarmonyType, PitchCorrectionScale};
+use super::types::{HarmonizerScale, HarmonizerSettings, HarmonyType};
 use super::AudioEffect;
 
 /// A single harmony voice
@@ -100,15 +100,8 @@ impl Harmonizer {
         // Update key/scale
         self.key_offset = key_to_offset(&settings.key);
         self.scale = match settings.scale {
-            PitchCorrectionScale::Major => Scale::Major,
-            PitchCorrectionScale::Minor => Scale::Minor,
-            PitchCorrectionScale::PentatonicMajor => Scale::PentatonicMajor,
-            PitchCorrectionScale::PentatonicMinor => Scale::PentatonicMinor,
-            PitchCorrectionScale::Blues => Scale::Blues,
-            PitchCorrectionScale::Dorian => Scale::Dorian,
-            PitchCorrectionScale::Mixolydian => Scale::Mixolydian,
-            PitchCorrectionScale::HarmonicMinor => Scale::HarmonicMinor,
-            _ => Scale::Chromatic,
+            HarmonizerScale::Major => Scale::Major,
+            HarmonizerScale::Minor => Scale::Minor,
         };
 
         // Set up voices based on harmony type
@@ -139,6 +132,20 @@ impl Harmonizer {
                 self.voice2.enabled = false;
                 self.voice3.enabled = false;
             }
+            HarmonyType::MinorThird => {
+                self.voice1.interval = 3; // Minor third
+                self.voice1.level = 0.7;
+                self.voice1.enabled = true;
+                self.voice2.enabled = false;
+                self.voice3.enabled = false;
+            }
+            HarmonyType::Fourth => {
+                self.voice1.interval = 5; // Perfect fourth
+                self.voice1.level = 0.7;
+                self.voice1.enabled = true;
+                self.voice2.enabled = false;
+                self.voice3.enabled = false;
+            }
             HarmonyType::Fifth => {
                 self.voice1.interval = 7; // Perfect fifth
                 self.voice1.level = 0.7;
@@ -146,6 +153,13 @@ impl Harmonizer {
                 self.voice2.enabled = false;
                 self.voice3.enabled = false;
             }
+            HarmonyType::Sixth => {
+                self.voice1.interval = 9; // Major sixth
+                self.voice1.level = 0.7;
+                self.voice1.enabled = true;
+                self.voice2.enabled = false;
+                self.voice3.enabled = false;
+            }
             HarmonyType::Octave => {
                 self.voice1.interval = 12;
                 self.voice1.level = 0.5;
@@ -153,6 +167,27 @@ impl Harmonizer {
                 self.voice2.enabled = false;
                 self.voice3.enabled = false;
             }
+            HarmonyType::ThirdBelow => {
+                self.voice1.interval = -4; // Major third below
+                self.voice1.level = 0.7;
+                self.voice1.enabled = true;
+                self.voice2.enabled = false;
+                self.voice3.enabled = false;
+            }
+            HarmonyType::FifthBelow => {
+                self.voice1.interval = -7; // Perfect fifth below
+                self.voice1.level = 0.7;
+                self.voice1.enabled = true;
+                self.voice2.enabled = false;
+                self.voice3.enabled = false;
+            }
+            HarmonyType::OctaveBelow => {
+                self.voice1.interval = -12;
+                self.voice1.level = 0.5;
+                self.voice1.enabled = true;
+                self.voice2.enabled = false;
+                self.voice3.enabled = false;
+            }
             HarmonyType::PowerChord => {
                 self.voice1.interval = 7;
                 self.voice1.level = 0.7;
@@ -180,6 +215,15 @@ impl Harmonizer {
                 self.voice2.enabled = true;
                 self.voice3.enabled = false;
             }
+            HarmonyType::ThirdAndFifth => {
+                self.voice1.interval = 4; // Major third
+                self.voice1.level = 0.6;
+                self.voice1.enabled = true;
+                self.voice2.interval = 7; // Perfect fifth
+                self.voice2.level = 0.6;
+                self.voice2.enabled = true;
+                self.voice3.enabled = false;
+            }
             HarmonyType::Custom => {
                 // Custom intervals are set via voice settings
             }
diff --git a/native-bridge/src/effects/multi_filter.rs b/native-bridge/src/effects/multi_filter.rs
index a674e05f..aa74b1da 100644
--- a/native-bridge/src/effects/multi_filter.rs
+++ b/native-bridge/src/effects/multi_filter.rs
@@ -44,6 +44,7 @@ impl MultiFilter {
             MultiFilterType::Highpass => BiquadType::Highpass,
             MultiFilterType::Bandpass => BiquadType::Bandpass,
             MultiFilterType::Notch => BiquadType::Notch,
+            MultiFilterType::Allpass => BiquadType::Allpass,
             MultiFilterType::Formant => BiquadType::Peak, // Approximate formant with peak
         }
     }
diff --git a/native-bridge/src/effects/rotary_speaker.rs b/native-bridge/src/effects/rotary_speaker.rs
index 67a7649a..9e2fca22 100644
--- a/native-bridge/src/effects/rotary_speaker.rs
+++ b/native-bridge/src/effects/rotary_speaker.rs
@@ -163,6 +163,7 @@ impl RotarySpeaker {
             RotarySpeed::Stop => (0.0, 0.0),
             RotarySpeed::Slow => (settings.slow_rate, settings.slow_rate * 0.85), // Drum slightly slower
             RotarySpeed::Fast => (settings.fast_rate, settings.fast_rate * 0.85),
+            RotarySpeed::Brake => (0.0, 0.0), // Brake slows to stop (handled by acceleration ramp)
         };
 
         self.horn.set_speed(horn_speed);
diff --git a/native-bridge/src/effects/vibrato.rs b/native-bridge/src/effects/vibrato.rs
index e68e488c..f0fa6f41 100644
--- a/native-bridge/src/effects/vibrato.rs
+++ b/native-bridge/src/effects/vibrato.rs
@@ -32,6 +32,8 @@ impl Vibrato {
         let waveform = match settings.waveform {
             VibratoWaveform::Sine => LfoWaveform::Sine,
             VibratoWaveform::Triangle => LfoWaveform::Triangle,
+            VibratoWaveform::Square => LfoWaveform::Square,
+            VibratoWaveform::Sawtooth => LfoWaveform::Sawtooth,
         };
         self.lfo.set_waveform(waveform);
         self.settings = settings;