Sometimes the easist way to fix something is to throw $$$$ at it. A New Magnum "Hot Stick" ???
Sorry, I just never had much luck repairing those Aluminum Tiller Sticks, I think they assemble them, THEN crimp the end in a machine.
HarryMurphey
H-18mag/#9458, Fleet54/Div11
P-19mx/#86, CRAC