diff --git a/src/PRDevice.cpp b/src/PRDevice.cpp
index 9a6772c..5a93148 100644
--- a/src/PRDevice.cpp
+++ b/src/PRDevice.cpp
@@ -382,7 +382,7 @@ PRResult PRDevice::DriverLoadMachineTypeDefaults(PRMachineType machineType, uint
     const bool mappedSternDriverGroupPolarity[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
     const int lastWPCCoilDriverGroup = 9;
     const int lastSternCoilDriverGroup = 7;
-    const int mappedWPCDriverGroupSlowTime[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 100, 100, 100, 100, 100, 100, 100, 0, 0, 0, 0, 0, 0, 0, 0};
+    const int mappedWPCDriverGroupSlowTime[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 400, 400, 400, 400, 400, 400, 400, 400, 0, 0, 0, 0, 0, 0, 0, 0};
     const int mappedSternDriverGroupSlowTime[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 400, 400};
     const int mappedWPCDriverGroupActivateIndex[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0};
     const int mappedSternDriverGroupActivateIndex[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7};