If you have a blueox check the tow bars. The levers can be up in the lock position but not be completely locked in. Happened to me affected my steering on MH. After 6 repair shops later for looking at front end drifting problems on MH found out it was the one tow bar not locking completely and swinging the MH when driving.
I'm kind-a wondering about this statement. Are you saying that one of the two locking devices on the tow bar, are not locking in the extended position? If so, then that would mean only one is doing the stopping because, the other one is not locked and therefore, is collapsing during compression or, braking. And, if that's happening, you're putting some serious twist and torque on the locked up side. Now, I realize that you've already had this problem taken care of but, just wondering.
I've had both of my Blue Ox tow bars completely apart, an Aventa II and the Aladdin. Both of which have some serious locking detents built into the extension bars. They either lock, or they don't. There is no in-between.
Scott