If in doubt, get a corkpuppy from Acidrod. Triples your clamping area. On a Sealine you'll need to file/grind down one side of the washer to clear the gearbox.
" Our Constitution predates the Industrial Revolution. There's a lot our founders didn't know about. It would be interesting to see what they'd draft today. Just keeping it frozen in time won't hack it." - Ross Perot 1992