Originally Posted by
aaron joy
Sounds like whoever you got the engine from changed the shims along with the crankcase timing. LOL
I'm not positive but I think it would be like any other RB C6. Two shims both the same color. One .1 and one .2, shimmed for %25 nitro.
Thanks Aaron. Got it back together. Tore all the grass outta my backyard. It's a bottom end wheel standing monster.