OP here. Thought I would update on my stair fix. I finally was able to get the motorhome to a local dealer and they said both the motor and controller were bad. They tried just replacing the motor but no luck. They purchased a "kit" which cost $450. The stairs are working again. They are actually working very well now, very smooth. The stairs had always been a little jerky-jerky before and now they come out and go in very smooth. Hopefully they will stay working now! This is the second motor and controller replacement since I purchased the motorhome new in 2017.