diff --git a/Mu2eG4/geom/geom_run1.txt b/Mu2eG4/geom/geom_run1.txt
index 09f518237d..693e2f508c 100644
--- a/Mu2eG4/geom/geom_run1.txt
+++ b/Mu2eG4/geom/geom_run1.txt
@@ -63,7 +63,7 @@ double mu2e.detectorSystemZ0 = 10171.;   // mm  G4BL: (17730-7292=9801 mm)
 #include "Offline/Mu2eG4/geom/STM_v09.txt" // (muon) stopping target monitor
 
 // Proton Absorber
-#include "Offline/Mu2eG4/geom/protonAbsorber_cylindrical_v04.txt"
+#include "Offline/Mu2eG4/geom/protonAbsorber_cylindrical_v05.txt"
 #include "Offline/Mu2eG4/geom/degrader_v02.txt" // pion degrader.  Off by default
 
 #include "Offline/Mu2eG4/geom/ProductionTarget_Hayman_v2_2.txt"
diff --git a/Mu2eG4/geom/geom_run1_a_stickman.txt b/Mu2eG4/geom/geom_run1_a_stickman.txt
index 47ed2d2bc8..3a6482810f 100644
--- a/Mu2eG4/geom/geom_run1_a_stickman.txt
+++ b/Mu2eG4/geom/geom_run1_a_stickman.txt
@@ -63,7 +63,7 @@ double mu2e.detectorSystemZ0 = 10171.;   // mm  G4BL: (17730-7292=9801 mm)
 #include "Offline/Mu2eG4/geom/STM_v09.txt" // (muon) stopping target monitor
 
 // Proton Absorber
-#include "Offline/Mu2eG4/geom/protonAbsorber_cylindrical_v04.txt"
+#include "Offline/Mu2eG4/geom/protonAbsorber_cylindrical_v05.txt"
 #include "Offline/Mu2eG4/geom/degrader_v02.txt" // pion degrader.  Off by default
 
 #include "Offline/Mu2eG4/geom/ProductionTarget_Stickman_v1_0.txt"
diff --git a/Mu2eG4/geom/protonAbsorber_cylindrical_v05.txt b/Mu2eG4/geom/protonAbsorber_cylindrical_v05.txt
new file mode 100644
index 0000000000..0fc748c70f
--- /dev/null
+++ b/Mu2eG4/geom/protonAbsorber_cylindrical_v05.txt
@@ -0,0 +1,12 @@
+//
+// Conical proton absorber geometry file.
+// Correced Dimensions and endRing Material
+// See Doc-57487-v3
+//
+
+#include "Offline/Mu2eG4/geom/protonAbsorber_cylindrical_v04.txt"
+
+//Corrected Dimensions - overwriting previous entries
+double protonabsorber.ipa.endRingHalfLength = 3.175; // 1/4" long in the z-direction
+double protonabsorber.ipa.endRingRadialLength = 19.05; // 3/4" long in the r-direction
+string protonabsorber.ipa.endRingMaterial = "IPAPolystyrene"; //Changed Material
diff --git a/Mu2eG4/src/ConstructMaterials.cc b/Mu2eG4/src/ConstructMaterials.cc
index 55aeea3145..50a7fe5027 100644
--- a/Mu2eG4/src/ConstructMaterials.cc
+++ b/Mu2eG4/src/ConstructMaterials.cc
@@ -1,4 +1,4 @@
-//
+ //
 // Construct materials requested by the run-time configuration system.
 //
 
@@ -1334,6 +1334,15 @@ namespace mu2e {
       CorrugatedPolypropylene->AddElement( getElementOrThrow("H"), 6);
     }
 
+    mat = uniqueMaterialOrThrow("IPAPolystyrene");
+    {
+      // We used an explicity density here
+      // Reflects the corrected density for End Ring material
+      G4double IPAEffectiveDensity = 0.426*CLHEP::g/CLHEP::cm3; //explicit density refer to Doc-57487-v3
+      G4Material* IPAPolystyrene = new G4Material( mat.name, IPAEffectiveDensity, 2);
+      IPAPolystyrene->AddElement( getElementOrThrow("C"), 8);
+      IPAPolystyrene->AddElement( getElementOrThrow("H"), 8);
+    }
 
     //G10-FR4 used for printed board of the I-Tracker
     // G10 http://personalpages.to.infn.it/~tosello/EngMeet/ITSmat/SDD/SDD_G10FR4.html
diff --git a/Mu2eG4/src/constructProtonAbsorber.cc b/Mu2eG4/src/constructProtonAbsorber.cc
index 174ef37edc..5c38d3a1fd 100644
--- a/Mu2eG4/src/constructProtonAbsorber.cc
+++ b/Mu2eG4/src/constructProtonAbsorber.cc
@@ -1614,6 +1614,9 @@ namespace mu2e {
             ostringstream wirename ; wirename << "IPAsupport_set" << iS << "_wire" << ++iW ;
 
             const double rStartOfWire = pabs1rOut0+(supportWire.originInMu2e().z()-zstartOfIPA)/pabs1len*(pabs1rOut1-pabs1rOut0);
+            if ( verbosityLevel > 0){
+              std::cout << "Set " << iSet << ", Wire " << iWire << ": rStartOfWire = " << rStartOfWire << "\n";
+            }
             const double wirePhi = iWire * 360.*CLHEP::deg / ipaSup->nWiresPerSet() + wire_angle_offset ;
             CLHEP::Hep3Vector additionalOffset ( (supportWire.halfLength()+0.005+rStartOfWire) *
                                                  std::cos(wirePhi),