O.S. .21 RG Question
I have an O.S. .21 RG that I've kept around for a back up engine that I'm about to break in. Does anyone know how many shims and what total thickness should be used to run 30%? It has 1 shim in it now. I'm not sure how thick it is I haven't measured it yet. Also does anyone know what other brand / type engine shims will work in a RG?