diff --git a/compact/ecal_backward_hybrid_tof.xml b/compact/ecal_backward_hybrid_tof.xml
index e7b8380d0c6558784c14ac674ccaf968bf2cef73..85e0668ddfca8ddfb333df9233cecc083289c859 100644
--- a/compact/ecal_backward_hybrid_tof.xml
+++ b/compact/ecal_backward_hybrid_tof.xml
@@ -56,7 +56,7 @@
       Backwards Endcap EM Calorimeter, placements generated by script
     </documentation>
     <detector id="ECalEndcapN_ID" name="EcalEndcapN" type="HybridCalorimeter" readout="EcalEndcapNHits">
-      <position x="0" y="0" z="EcalEndcapN_z0"/>
+      <position x="0" y="0" z="EcalEndcapN_z0 - 1.0*cm"/>
       <rotation x="0" y="0" z="0"/>
     </detector>
   </detectors>
diff --git a/compact/tof_backward.xml b/compact/tof_backward.xml
index b4238810dba0df84cab84ce872cd4b08d930bdca..69b3c2670225e1f75a74eb815e35d413778ac1ff 100644
--- a/compact/tof_backward.xml
+++ b/compact/tof_backward.xml
@@ -11,7 +11,7 @@
     <constant name="BackwardTOFService_thickness" value="5.00/100*9.37*cm-BackwardTOFSensor_thickness"/>
     <constant name="BackwardTOF_nLayers"          value="2"/>
 
-    <constant name="BackwardTOF_length"         value="1*cm"/>
+    <constant name="BackwardTOF_length"         value="1.0*cm"/>
     <constant name="BackwardTOF_zmin"           value="BackwardPIDRegion_zmin+BackwardPIDRegion_length"/>
     <constant name="BackwardTOF_dz"             value="(BackwardTOF_length-0.4*cm)/BackwardTOF_nLayers"/>
     <constant name="BackwardTOF_thickness"      value="BackwardTOF_dz - 1.0*mm"/>
diff --git a/compact/tof_forward.xml b/compact/tof_forward.xml
index 49cf29853b61d1d9485bf9555f826f605b0dea65..8f3f33ceb85805c4fd3d84dd0a6a2ae9859375aa 100644
--- a/compact/tof_forward.xml
+++ b/compact/tof_forward.xml
@@ -12,9 +12,9 @@
     <constant name="ForwardTOFService_thickness" value="5.00/100*9.37*cm-ForwardTOFSensor_thickness"/>
     <constant name="ForwardTOF_nLayers"          value="2"/>
 
-    <constant name="ForwardTOF_length"          value="10*cm"/>
+    <constant name="ForwardTOF_length"          value="1.0*cm"/>
     <!--constant name="ForwardTOF_zmin"         value="ForwardTracking_zmin"/-->
-    <constant name="ForwardTOF_zgap_dRHIC"      value="10.0*mm"/>
+    <constant name="ForwardTOF_zgap_dRHIC"      value="10.0*cm"/>
     <constant name="ForwardTOF_zmin"            value="ForwardPIDRegion_zmin-ForwardTOF_length-ForwardTOF_zgap_dRHIC"/>
     <constant name="ForwardTOF_dz"              value="(ForwardTOF_length-0.4*cm)/ForwardTOF_nLayers"/>
     <constant name="ForwardTOF_thickness"       value="ForwardTOF_dz - 1.0*mm"/>