bought new in march 2011 and have been having problems with side door sticking (hard to open from inside once unit is leveled). works ok when not leveled. had to dealer 3 times and they say they adjusted striker each time. works fine until next trip out then here we go again. i have to loosen striker with an allen wrench (and leave it somewhat loose) to open door. also hard to operate deadbolt lock at times. this seems to be temp. related. anyone else had this problem???