I have a 2015 3160EL with level up which I used this weekend. With the level up extended everything was fine except the laundry room door would no longer latch because the door frame was slightly offset (small gap by the hinges and a much wider gap on the lock side). The campsite wasn't really that much out of level either. When I retracted the level up the door frame went back to normal and the door would latch. This behavior sounds like a weak frame to me and I'm wondering about my first Heartland purchase. I would like to hear from somebody from the factory that monitors these forums for a good answer. I don't have a lot of confidence in the product at the moment. Thank you.