[Motor31]

If the travel latch is broken you can get a spring rod from the store and use it to prop the door in the open position. That will keep it from slamming back and forth while moving. That's the easiest cheap "repair".

If the door is hanging into the basement the rail must be separating from the roof. That's what happened to ours the first time we moved it. DT only used 3 rather short screws to hold the entire assembly to the roof. DUMB!

You can start by removing the trim from the bedroom side of the rail area. The wooden strip on each side of the rail is what I'm talking about. The bedroom side trim has a couple screws hidden by wooden plugs. Pull the plugs then take out the screws.

That gives you access to the rail and the door hangers. The door hangers have a nylon lever that locks the hanger to the rail track roller. Open the lock then you have to gently lift the door and move the roller to the side. The pin is part of the door and it fits into a slot in the roller. Getting the door out is a PITA but you need to remove the weight from the rail. You might want to place something in the basement and let the door down gently in the pocket area rather than remove it entirely. Your option as to what you think is easier.

Once the door is out of the way you can get some long (2" IIRC) wood screws and secure the rail back to the roof. You'll likely need to remove the grill above the pantry as that covers the rear most portion of the rail. Once the rail is secure again you can remount the door back into the rollers. and put the trim back.

FWIW the rear "stop" that limits travel into the pocket on our rig is nothing more than a small length of wood (1x2 or 1x1) that is jammed into the rail by the folks that assembled it at the factory.