Just to clarify something here
Yes - some models of RCGF did have bushings on the con rod but they DO have rollers and ball races on the crank.

I agree that the 100cc engine Pat received is not performing as others have seen. When I get back to Oz in a few weeks, I will take some video to post of my own side induction and rear induction versions just to show that some do perform well. I don't know what is going on with Pats engine and I'm the first to admit that it sure is a weird one on the performance figures he's getting.