Hi, my bathroom door was coming loose. Airstream used 1/2" screws to hold the piano hinge onto a half inch piece of wood that was brad nailed to the bathroom wall. I used 1 1/4" Kreg screws that went though the piano hinge, though the 1/2" piece of wood, and close to 3/4" into the wall. In some places, I have found that Airstream uses screws that are too short and will eventually strip out. [Longer screws is the answer]
Also I had a bathroom corner wall that was coming loose. It was also held together with brads or air-nails. I used six screws and plastic screw caps/covers. My fixes have never come loose again.