Put the new flex plate and new starter on last night……had plugs out and spun engine over to check fit.
Starter to flex plate looked good but I noticed the plate did not spin true, sorta wobbled.
Compared area where it ran away from starter and it was also same area where teeth were damaged on old plate.
Pulled plate back off and checked end of crank….was not rusted but felt …..course, for lack of better term.
Took a flat file and worked the mounting face and got it good and clean.
Put plate back on and it spun true.