Have RV Questions? Ask an RV Mechanic Online.
It is probably out of adjustment and/or some lubrication is lacking or both. Take a measurement from the edge of the trim to each side of the trailer in the same spot and see what the difference is. Also look and see if the room is centered in the opening or too much to one side or out of plumb. Let me know what you find and we can discuss a solution.
Just checking back in to see if you were able to resolve this issue or do you still need some additional input from me here?