Despite having a heavy duty frame, if I over-snug the rear "stabilizer" jacks (ours are electric) even slightly more than snug, our dead bolt won't go into the door strike. The frame flexes just enough to make the dead bolt in the door not allow to fit into the strike. Took me a long time to figure that out. The wall assembly has to be racking ever so slightly.
Tried to get the dealer to fix it at one point but when they asked me to demonstrate it, I couldn't - now I know it was because the "stabilizer" jacks weren't down. On my to-do list is removing the strike plate and filing it a bit.
