Thanks Jazzy. That is the rough procedure I have followed to date. Although usually with low pitch props.

I've read accounts of rpm increasing by 10 or 15% in the air with higher pitch props. That's a whole bunch IMO, and I just wonder how the engine can do that if it wasn't running well rich to begin with.

The plane is a Great Planes Tracer with an OS46FX, Macs quiet pipe, and currently an 11x7 APC is the prop choice.

Time will tell.... I'll have to listen carefully when it flies.