I installed a tethered CC-M (thanks @gunrunnerjohn). However that didn't resolve the lurches. After some more investigation, it looks like the lurchy starting/low-speed behavior is not due to the DCDR or lack of cruise, but due to motor binding. The rear motor/truck on the lead A-unit is binding at a regular interval and one or both are binding on the trailing A-unit as well. My focus has been on the lead A-unit since I can test it without the B-unit or trailing A-unit. I've taken the rear truck off the lead A-unit about a dozen times now and also tried swapping it with the rear truck from the trailing A-unit. I've done my best to get all the grease and gunk I can access off both the worm gear on the motor and the gear box, then added fresh grease (Labelle 106) to both. I've also tried adjusting the tightness of the screws connecting the motor mount to the truck. Nothing has helped to resolve the binding. Am I looking in the wrong place here? Any thoughts?
