Ok I now have the P9 and I was wondering about a few things.
As this motor was used when I got it I wanted to go thru it (piston and sleeve are new).

I pulled the motor apart and went ahead and replaced the outer bearing since I had one but no matter how much I heated I could not get the inner bearing out (any thoughts). ???

Secong was the head shim it measured .49 does anyone no what the shim would be for 20-25%?

I was told they had it set for 30%.

The motor by the way is in great shape with lots of compression tight fit crank to rod (also have extra rod).

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Mugen MRX4X - Picco P9 EVO2