I bought a brand new 2017 x213 and at first everything worked fine. Last camping trip I noticed the rear slide was acting funny and after inspecting I found that both slide guides were slightly off track. Inside the slide "channels" there are a set of wheels, one for each track, that roll on the lips of the guide. The wheels had come off track and were getting partially wedged along the track. I was able to get the wheels back on track but they still come off occasionally when I'm extending the slide. I really don't want to have to deal with warranty work and a dealer if I don't have to, so any suggestions. Does anybody know how to adjust the slide, it looks like if I adjust it further over to one side it would solve the problem...just not sure how to do it