Finally fixed an annoying issue, the roof wasn't raising evenly, even when fully up one corner was sagging slightly. Some checking through the manual indicated that there were pulleys at each corner that could be moved to provide some adjustment. I found these on the underside of the trailer near the legs:
Quick fix, raise the top about a foot, pull out each bed about a foot, lower the roof back down to create slack in the cables. Pull the pin out of the pulley, and move the pulley out a notch to take up some of the cable slack, insert the pin, raise the roof and verify height. In my case, moving one pulley a single notch fixed things right up.