I have a Coleman popup. it's a Sea Pine year 2000. The pipe that you insert the hand crank into has broken off part of the nut into itself and is rattling around in the pipe. Consequently if we crank it up too tightly it will not crank down the camper top and will just come "unthreaded". What I wonder if any of you pros know is that pipe replaceable or what? If not what does it take to repair it?