I have a 'new to me' 2007 310SRX. It is a toy-hauler, which makes the problem easy to see, but I'm not sure that it is a toy-hauler only problem. The back of the 5th-wheel is not tight to the floor, leaving a 1/2 inch wide gap I can see daylight through. There appears to be two bolts that line up with the frame, just below floor level that are loose or stripped. The is no way to tighten them because the heads are behind the rear fiberglass sheeting and under the floor.
Has anyone else encountered this problem. Does anyone know how the back wall is built and any ideas of what I can grab on to from the cargo area or underneath the floor to pull it back together. It does not appear there is anything solid to run bolts through from the outside to the inside. I hate to think the only fix is to remove the outside skin.
http://www.scenicoverlooks.net/problem.html