hello! We recently(last wednesday) purchased a new to us Sundance. Our rear slide out metal track is catching the flooring and tearing it. I noticed there are what looks like adjustment brackets on the outside of the slide. Can we adjust the slide this way? Also, do we adjust it with the slide in or out? From looking at it on the outside, the trim on the slide is lower than the trim on the actual camper on the side thats catching the floor. Thank you so much for the help in advance!