2013 Adventurer, extended large slide over the weekend and just before full extension I heard what sounded like the rear top slide gear jump a couple cogs. All weekend I was dreading retracting the slide. When I finally did retract, the top of the slide was indeed in more than the bottom. By about 1 1/2". So the slide gear did in fact jump some on the slide track. Does anyone know how to make this right. I need to release the top gear in order to align it with the bottom so they are vertically even.