When I tried to furl the mizen sail into the mast using a winch handle in the hole on the front of the mizen mast, after a few turns the sail would no longer furl and the winch handle turned freely as though the gear box at the bottom of the furling foil had broken. I disconnected the gear box from the mast and discovered that the drive shaft that goes through the mast into the gear box had become unscrewed from the gear box. I screwed the drive shaft back into the gear box and tried the system again but it continues to become unscrewed and you can't furl the sail.
How do I get this drive shaft to remain screwed into the gear box? Is there a pin that has perhaps sheared? or do I just put epoxy glu on the screw threads and hope it holds?
I look forward to your help and advice with this problem,
