Hi guys,

Just got a new GXII to replace my stock RTR motor, hopefully i can break it in soon!!

I have 2 questions:
- the collet that came with the kit seems to be tight and doesnt fit easily onto the crank. I pushed it on slightly (with some light force) using the flywheel but Im concerned it may scratch the crank if I push it all the way or if it needs adjusting for whatever reason its going to be impossible to remove. Is this normal?
- How many shims should I use for breaking in (will be using 25%)? Do I need to adjust the shims once the motor is broken in?

Thanks.