I've had my Trailrunner out in the rain twice. Both times it was muggy as well and I used the air conditioner. After driving home, I've found the cushions under the AC soaked . I think it's the AC, not the rain, but I'm not sure. It can definitely sit in pouring rain and not leak. Where is the AC supposed to drain to? Should I be able to see it? I really don't want to remove the outside grill or the AC itself to find out where it's coming from. It's under warranty but I don't believe I have a Heartland dealer near me, I bought it in Michigan and live in Ontario...