Dru

I am running a OS#8 plug.
I like you method of determining the factory setting and will try this out.
I understand the pitch and throttle curves play a big part in the motor turning and have taken this into consideration by adjusting both curves to suite the model.
BUT
you will notice that there will be a point at which both the pitch and throttle curves will not make any difference to how the motor runs ie if the motor is to rich or lean. I feel this is where I am at, at this moment.

Chris E