A new bug has developed in our slide out. Twice on this trip, it won’t start to extend, until I give the manual override a bump with my drill and 3/4” adapter. Once it gets going, it extends all the way out, just as it should. No binding or drooping. It retracts just fine. This is also an intermittent problem It extended just fine during lunch and pit stops on the road today, but required the drill once we got to the campsite. The gear is clicking like it does when it reaches the extent of its extension, and retraction, but it takes a boost to get going. It is a rack and pinion system, but I can’t see the motor as it’s hidden by the underbelly. Any thoughts or advice would be appreciated! Thanks.