Re: Mag side engine seal.
Hey, here's a little trick my dad taught me along time ago...
Get a small piece of rope or thick wire, pull your plug, turn until you're about 'bottom-dead-centre', insert a good foot or so of the rope/wire into the plug hole, keep out enough so you can pull it back out when you're done!
The rope/wire will keep the piston from 'cranking over' and allow you to loosen any crank nut.
Oh, and when pulling the rotor make sure you mark which side is 'out' with a scribe or marker or something. If you put it back in wrong, you'll mess up your ignition timing!!
Build with pride! Build to ride!
"A clean shop is a sure sign of a cluttered mind" ~ fasteddy