Thanks again guys.

I'd looked at Troy's page but it's only relevant to the pressurized tank variants.

I guess what caused me to question in this case was the fact that, at the settings I had arrived at, it actually ran lovely at all throttle settings and had stunning transition. Every other 4C motor (all non-YS and all 1.20 or smaller) I've owned would let you know the out-of-adjustment by being noticeably rich or lean in some way (burbling, 8-stroking, hunting, sounding "hard" etc.), but wouldn't actually stop. With this being a bigger and better metered engine, I've learned that it can sound fine but still not be optimum and am now expecting to fine tune in the air over many hours of gentle tinkering, I'm sure there is even more performance to come.

A