If your motor continues to run for a few seconds after the slide-out stops, you may want to check this.
I am at the factory having my furniture replaced and I asked the tech. to check my bedroom slide motor (the one behind the tag wheel) as it continued running after the slide stopped. When he tried to extend the slide, the motor ran but the slide did not move. His diagnosis was that the trantorque just needed tightening. Wrong!
In the picture you can see that the actual shaft from the motor (not shown) to the cog has shattered! The shaft had obviously been twisting and breaking in pieces until the final piece broke. Luckily for me this happened on the floor of the service center.
Newmar replaced the whole assembly with new motor, shaft and cogwheel at their expense