Hi I have a 56 evinrude and I took the powerhead apart and replaced some gaskets, now that I'm putting it all back together, the flywheel keeps catching on the stator plate and won't turn freely on it's own, and when I tighten the nut down on the flywheel it won't turn at all. Everything looks fine and for the life of me I can't figure out what's wrong, I'm almost ready to give up on this engine.