Hey guys, We bought our about a month ago and have already taken it out 2 times! It's been such a great addition to our family. For the past 2 weeks, it's sat level in the backyard. It's been raining but no worries, we covered it in a tarp. We went to open it up today only to see that the rubber seal was inhibiting us from opening the door. We were able to push it around to get the crank out and then we realized that the roof appeared to have sagged a bit from front to back. We cranked it up and then when we tried to put the door on and the door wouldn't slide into place. With some shaking we got the door in place and latched in. Has anyone else had this problem? What can I do to avoid it? Do I need support braces from side to side and front to back under the top? We don't have an AC unit. What's the best course of action. Thanks in advance for your help!