Bent Crossmember
 

I always wondered why my rear adjustment bolts were so far out compared to the front ones. Crawling around under the camper, which is a chore for me as I'm not the skinniest person around, I found the rear crossmember is bent about an inch right where the pulleys are bolted. Not going to mess with it now, but in the spring I'll take a 56 inch piece of 1x2 rectangular tube and bolt it to the crossmember and see if I can pull it back where it belongs.