[GmaPaTime]

I'm having an exact same issue on one of our basement doors. The door would stay open until the slightest movement of the trailer and then it would let go. This happened one time while I was removing something from the basement and it closed on my back. Not fun!!!!

It appears that the surface the hinge is mounted on is slightly curved in which is binding the hinge. Our trailer is presently at the dealer having this and couple other minor repairs taken care of.