Bathroom Door Fix
We had a similar problem on our rig. In our case, the channel that's fastened to the overhead door framing was loose. The door is suspended from the channel. On ours, 2 of the 3 screws that fasten the channel to the opening were bad. (One of them was completely missing.) The other screw was located where it met a metal object in the framing - and it never actually bit and took a grip. I secured the channel with new screws , locating them so they went into the wood framing, and the problem was solved. Up until that time, only 1 screw was actually holding the channel in place: it had worked loose due to shaking and vibration while being on the road, allowing the channel to come loose and sag.
Steve & Terri
2017 305RL Montana High Country
2017 F-250 CCSB Diesel Lariat FX4