Feed Rate knob no longer works after upgrade to 1400-5

I've been talking to guys I purchased the upgrade cards from to see if they can figure out the reason I can no longer adjust the feed rate by using the override knob. Everything runs at 100% no matter where the knob is set. They are still trying to figure out what to do.

Just curious if anyone here has any ideas on what to look for or has seen this issue before. I'm assuming I'm not the first guy that went from a CNC88 -2 to a -5 system. Everything else works great (other than being able to reset from an Emergency Stop - right now I have to shut down the machine and start it back up in order to get it to energize the axis amplifiers, but I can live with that)

Here's the cards that were swapped:

Fadal -5 Upgrade kit (Old Card that was replaced)

1010-6g Axis Control (1010-4)
1010-6g Axis Control (1010-4)
1010-6g Axis Control (1010-4)
1010-5a Axis Control (1010-1a)
1610-1 PCB Prog Mod (1610-0 ver v91.2b-2)
1090-3b Keyboard interface (1090-3)
1030 Rev e Computer Interface - Clock disabled (1030-0d )
1400-5c CPU Board (1400-2)
1420-4a Video Board (1420-1a)
1460-4b Memory Board (None installed before)
1730-5 3 card Bus Port Not installed
Mill Interface Board 1040-1 still in machine - not replaced
Clock Card 1020-0d still in machine - not replaced


Thanks for any suggestions!!!