2013 Txc 310 Flywheel Stuff

I am "restoring" a 2013 310 txc. When I finally got it together from a top end and engine out frame up re-build, it kick started and ran perfectly. Happy with this, I installed new starter gears and a shorai and of course then it would not start at all. It would sound like it wanted to start but actually it sounds out of time. I have removed the flywheel several more times and puzzled much. I noticed my woodruff key is a little distorted.....then I got to thinking about the flywheel and how I was tightening it. I hold the flywheel with a oil filter wrench.....so bottom line, I think the flywheel is getting twisted a little and causing me 3 or 4 degrees of excessive advance. I have a new key coming and a sprocket jammer so I'll put it in 6th gear and torque the flywheel that way without putting twist on it. TRICKY TRICKY