Hello everyone ! We just got back from our first long road trip with the RV. A 2011 Heartland Edge M21. We got a chance to use all the features, heater, air conditioner--lots of air conditioner, in dry and very humid conditions, used all the plumbing. Forgot to latch the windows once--no damage, forgot to put the step in, once--no negative consequence. The first rain-storms, getting lost on twisting mountain gravel roads, nice parks, mediocre, and seedy parks, 4000 miles--a real adventure. One thing is a mystery to me. The propane cover fell apart. We had to tie it on with some cord, and then it continued to take damage. Obviously it needs to be replaced. I don't understand what tore it apart. Any insights?