BTW...I was a little shocked when I measured the output shaft as it was when it arrived...it was .983, which is really undersized for a 1" crank...if it was mounted to a standard 1" pump, that gap around the shaft allowed all that corrosion to form...
Shouldn't happen again...a 3/4" clutch fits like a glove now...when the shoe hub heats up from riding, it will actually close down completely onto the crank...zero wobble.