Well, maybe not a yard stick---
I C clamped a small bit of scrap steel to the flywheel rim and then set up an indicator about half way through its travel. It's easy to see the movement of the cam when it changes direction...it's harder to watch the cam and the indicator at the same time!
I get .195 TIR on a 24 inch flywheel rim between cam movement in one direction to a change in the other direction.
I had the oil draining from mine when I read the thread. That's why it was done so FAST.
I have more than enough bronze flakes in the sump to bring worry about the health of the pinion gear, but I cant tell the gear is worn!! It's 'wearing in'.
1509 hours on MT-II