Marty,
I'm not sure if this is your problem but I had the bedroom slide get balky and sometimes I had to apply the in, then the out, switch position many times before something would happen. I had this happen somewhat randomly but more often recently. The other thing is it seemed like my slide was laboring a bit and moving slower than I thought it might. I oiled and lubed the chain and any friction points thinking that might help but it did not seem to improve the laboring of the mechanism.
We set out to leave AL several weeks ago and when we were ready to leave I hit the slide switch and nothing. That forced me to take a much harder look given this was disabling our travels. I put an amp probe on the motor wires and found current was being drawn at the 10-20 amp level when I applied the switch. What surprised me is that there was absolutely no movement or sound, not even a telltale hum. Pondered this all a bit... On the end of the motor shaft was what appeared to be an electric brake of some kind. I removed it and found the slide would now move in and out using the switch. The brake is wired in parallel with the motor. When you hit the switch it is built to release on power and lock with power off. This unit was locked all the time. I tapped it on some nearby metal framing and found some white corrosion dropped out of it. I pulled out some brake cleaning spray and sprayed the assembly, then added a drop of oil to the center brake shaft mechanism. I did some short power cycles and used a screw driver to rotate the slotted center shaft on the brake that couples to the motor shaft until it moved freely. I put it all back together and it has all worked perfectly ever since and certainly the slide drive moves more freely. Evidently this brake has been dragging for some time and I think this brake cleaning should be a maintenance item at some interval, maybe at the first sign of laboring or non movement when applying the switch. One last note, the bottom DC breaker CK12 did kick once so you might want to reset that to be sure that is not an issue. Brake photo attached. I spoke with Gerald about this and he told me that he has a non electric mechanical brake so not all coaches have this version of brake. If your brake has no wires you have the mechanical version and you may still want to verify that it is adjusted so as to not add excessive friction. Hope this helps.
Later Ed