[gearhead]

Is the gearbox making sounds like it's about to fly apart?
Might not be the motor or gearbox. Does the slide have any visible tracks on the bottom or is it just slick? Mine are slick. This is what I did:
Clean the sides and bottom of the slide out with a little Acetone on a rag. Test a small spot on the bottom first to be sure it's OK. Then spray the bottom and sides with WD 40 Specialist with PTFE. Label will say "does not attract dirt or dust". Spray some in the void between the bottom of the slide and the side of the coach. Don't spray the WD40 on the seals. Clean and wipe the seals with a slide seal lube, interior and exterior seals.
Mine did the same thing but didn't stop. I think mine was built up wax on the sides of the slide.
I read somewhere that 409 is used to clean the slide. Didn't help on mine.