And this is the discussion of the Frame problem in early 2009 Elkmonts:
Frame Problem
Apparently there was a fix available.
If Trailmanor is defunct, you are alone on this unless you can persuade the dealer to apply the fix.
If it was me, with that amount of $$ already invested, I would get it fixed out of my own pocket if necessary.
EDIT: Can you see those threads? Just noticed you are not a regular member of this website.