Another Claw issue

We are having a strange problem with the Motor Fading on a VEX Claw.

The claw works fine and then (3 to 5 x open/close) it starts to slow down to where it doesn’t move at all. Then after 5s it runs fine then repeats pattern.

We’ve tried changing controllers, motors, ports and the Cortex !!

Yes, the VEX connectors are (always) weak & suspect. We have the VEX-approved thingies that hold connectors together and ‘jiggling’ connectes makes no difference

We are not holding the jaws in any extreme to cause overheating nor does there seem to be any binding.

We’re using the same code as the ClawBot sample (IF…THEN…ELSE) Debug shows the motor speed correlates with the button being pushed so I’m guessing the code/remote works as planned. (attached ZIP)

#Clueless here & hoping some can help!
01-17-2018.zip (2.51 KB)