Hello!
So far we haven't had that issue with our 3450TS. I do take time to level the best I can, including making sure the front (electric) legs reach the ground at the same time as not to put a sideways bind on the rig.
I see you are from WA state. In case I haven't contacted you previously, I encourage you to look at the Heartland Owners Club and consider attending our 2012 Rally in July.
Good luck with that 3450! They are great rigs. We really enjoy ours!