Thanks e3 Steve. Yeah .. that's what I did with the shaft. My wife keeps wondering what those weird dinner items in the freezer are though.We used to plonk the flywheel in the freezer for a couple of hours then heat the ring gear, whip the flywheel out and it just drops onto the shoulder. Let it all settle back to room temperature and Robert's Your Mother's Brother!
But you only get 1-quick shot. Soon as the froze part hits the metal, it sucks the missing energy back in.