recently bought 2011 3150,made date of 11-10-10, purchased 1-14-11. wall between closet and w/d ,split 14" back from front of cap(inside),I see pin move about 1" up&down in mirror while driving,trying not to get to worried about broke welds yet,it appears lots of issues on same matter. plus black tank flush valve does not work & gate valve will not close intirely ,still waiting on warranty work after 6 weeks, not happy. anyonelse with simular or worse. I haven't mentioned the real facts about the whole event,not a good experience.