Side Wall Crack and Slide Room Adjustment

I own a 2011 Cyclone 3800 HD and have noticed that the outside wall at the top right corner of the kitchen slide has a crack about 1.5 inches long. There is no other sign of stress in the area, what can I do to repair this?

I also noticed that the bedroom slide is rubbing the wall on the bathroom side. It just rubs at the top of the slide were the wood work over the bed is. Is there an adjustment for the slides?

Thanks