I know there is a tool/ring used to set the gap, and I have read "the Joe Reeves" method, which I could do. However, being a recently retired toolmaker, and with a lathe, mill, etc at my home shop I would like to machine a ring to use. Does anyone have one of those rings? I'd like a measurement of it if you do.....the difference between the diameter that the coil actually contacts and the diameter that the ring locates on the magneto plate. (or, does anyone know the suggested air gap between flywheel magnets and the coil heals/tails)? I hope that is clearer than mud! I could try to measure the chamfer that Joe was referring to but they are slightly different at each of the 4 spots on this particular CD-11 Thanks, gents.

