Thanks for the explanation on the internal/external thing. Cleared it up quite a bit actually. Yes it was smoking hot here. 104F. at my place. Was a good day to work in doors and stay out of the sun. I ended up taking my flywheel to a local transmission guy who has been doing this for years., and got his advice on how bad the flywheel was. He kinda of shrugged and said I should turn it once more, as a local shop down the road has a new surface grinding machine. It does a way better job than turning it on a lathe. 60$ later it looks like new. As opposed to 400.00$ I'm budgeting, it was worth the gamble in my mind. Time will tell..