I've messed up the orientation of a biased balance flywheel, did not mark where it went, and subsequently have caused a rear crank seal leak.

Looking on here it seems the crank pretty much has to come out anyway in order to replace the rear seal, so I am intending to just pull the entire crankshaft and take it to a machine shop with the flywheel bolted on, then have them properly re-balanced.

This is on a 300k motor, so a new timing chain wouldn't hurt anyway, but looking for advice and tips from anyone who has pulled out the crankshaft.

(The motor is in a GM van, so conceivably I can actually remove the crank with the motor still installed, there is excellent room)

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