You want to be very careful here, you wouldn't be the first guy to be bitten by someone who claimed they could rebuild the crank only to have it lock solid 500 miles later wreaking the cases at the same time.

StephenRC45 has the kit to do them, no idea if he still is though and he's about as far south as you can get.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread