Matt,as Roger pointed out the crank is not too good ,and the threads don,t look good either,,but before i would junk the crank .i would get some lapping compound and lap the flywheel to the crank and try to get 100%fit crank to flywheel .,when you do this besure you have all the compound off the shaft ,and flywheel ,and get some machinist blueing and wipe a small amount .on the shaft ,then push flywheel on with out key ,then rotate flywheel 1/4 turn ,remove flywheel ,and look to see how much blueing is in the bore of flywheel ,if you don,t have 100%,lap again ,till you get 100%,then get new key stock ,grind to fit bottom of ket to fit shaft shaft on the large part of shaft ,wipe all blueing off and install flywheel ,be sure the torque is right ,and the nut is good .hope this helps David