[Yuta]

Originally Posted by piper6909

I don't think that set-up would stop it from moving. remember, even the slightest movement is enough to upset the timing.

If you want to try that route, I'd suggest an L-shaped flat bar, something like a faming square where you can bolt it to, say, A, crank and C. Then another for E, crank and G. This way, it's well-triangulated so it can't rotate.

Good point. I thinking I'm going to do the following