I've had this issue with my Rockwood. I've sheared two bolts, always on the driver's side of the camper, the original and a replacement Grade 8! I carry many extras now! I think my issue was self caused and was when i retracted the gear too far and causes the motor to shift a bit and hit the bolt head and shearing it. Got it leveled out the first time, but didn't spend the extra time the second time round, so I'm about 1/8" to 1/4" off. Need to take a minute soon and adjust as it drives me crazy, even though it is just the right height to put a small yellow foot pad under to level out prior to putting the gear all the way down.
Pull-Rite 16K Super 5th
2014 Rockwood Signature Ultra-Lite 8289WS
2011 Chevy 2500HD - DuraMax (Just over 5000 miles now!)
Nights camped in 2014 - 21