diff --git a/EXRAIL2.cpp b/EXRAIL2.cpp
index 9a038f5..ef79c60 100644
--- a/EXRAIL2.cpp
+++ b/EXRAIL2.cpp
@@ -169,14 +169,10 @@ int16_t LookList::find(int16_t value) {
 
   // Second pass startup, define any turnouts or servos, set signals red
   // add sequences onRoutines to the lookups
-  for (int sigpos=0;;sigpos+=3) {
-    VPIN redpin=GETFLASHW(RMFT2::SignalDefinitions+sigpos);
-    if (redpin==0) break;  // end of signal list
-    VPIN amberpin=GETFLASHW(RMFT2::SignalDefinitions+sigpos+1);
-    VPIN greenpin=GETFLASHW(RMFT2::SignalDefinitions+sigpos+2);
-    IODevice::write(redpin,true);
-    if (amberpin) IODevice::write(amberpin,false);
-    IODevice::write(greenpin,false);
+  for (int sigpos=0;;sigpos+=4) {
+    VPIN sigid=GETFLASHW(RMFT2::SignalDefinitions+sigpos);
+    if (sigid==0) break;  // end of signal list
+    doSignal(sigid & (~ SERVO_SIGNAL_FLAG) & (~ACTIVE_HIGH_SIGNAL_FLAG), SIGNAL_RED);
   }
 
   for (progCounter=0;; SKIPOP){
@@ -1005,7 +1001,7 @@ int16_t RMFT2::getSignalSlot(VPIN id) {
   }  
 }
 /* static */ void RMFT2::doSignal(VPIN id,char rag) {
-  //if (diag) DIAG(F(" dosignal %d %x"),id,rag);
+  if (diag) DIAG(F(" doSignal %d %x"),id,rag);
   int16_t sigslot=getSignalSlot(id);
   if (sigslot<0) return; 
   
@@ -1018,12 +1014,13 @@ int16_t RMFT2::getSignalSlot(VPIN id) {
   VPIN redpin=GETFLASHW(RMFT2::SignalDefinitions+sigpos+1);
   VPIN amberpin=GETFLASHW(RMFT2::SignalDefinitions+sigpos+2);
   VPIN greenpin=GETFLASHW(RMFT2::SignalDefinitions+sigpos+3);
-  //if (diag) DIAG(F("signal %d %d %d"),redpin,amberpin,greenpin);
+  if (diag) DIAG(F("signal %d %d %d %d"),sigid,redpin,amberpin,greenpin);
 
   if (sigid & SERVO_SIGNAL_FLAG) {
     // A servo signal, the pin numbers are actually servo positions
     // Note, setting a signal to a zero position has no effect.
     int16_t servopos= rag==SIGNAL_RED? redpin: (rag==SIGNAL_GREEN? greenpin : amberpin);
+    if (diag) DIAG(F("sigA %d %d"),id,servopos);
     if  (servopos!=0) IODevice::writeAnalogue(id,servopos,PCA9685::Bounce);
     return;  
   }
diff --git a/IO_PCA9685.cpp b/IO_PCA9685.cpp
index 009ff63..8270509 100644
--- a/IO_PCA9685.cpp
+++ b/IO_PCA9685.cpp
@@ -139,11 +139,11 @@ void PCA9685::_write(VPIN vpin, int value) {
 //             4 (Bounce)  Servo 'bounces' at extremes.
 //            
 void PCA9685::_writeAnalogue(VPIN vpin, int value, uint8_t profile, uint16_t duration) {
-  if (_deviceState == DEVSTATE_FAILED) return;
   #ifdef DIAG_IO
-  DIAG(F("PCA9685 WriteAnalogue Vpin:%d Value:%d Profile:%d Duration:%d"), 
-    vpin, value, profile, duration);
+  DIAG(F("PCA9685 WriteAnalogue Vpin:%d Value:%d Profile:%d Duration:%d %S"), 
+    vpin, value, profile, duration, _deviceState == DEVSTATE_FAILED?F("DEVSTATE_FAILED"):F(""));
   #endif
+  if (_deviceState == DEVSTATE_FAILED) return;
   int pin = vpin - _firstVpin;
   if (value > 4095) value = 4095;
   else if (value < 0) value = 0;
diff --git a/version.h b/version.h
index c03f77d..3e03ea4 100644
--- a/version.h
+++ b/version.h
@@ -12,6 +12,7 @@
 //       Automatic ALIAS(name) 
 //       Command Parser now accepts Underscore in Alias Names
 // 4.0.2 EXRAIL additions:
+//       ACK defaults set to 50mA LIMIT, 2000uS MIN, 20000uS MAX
 //       myFilter automatic detection (no need to call setFilter)
 //       FIX negative route ids in WIthrottle problem. 
 //       IFRED(signal_id), IFAMBER(signal_id), IFGREEN(signal_id)