Hi,
Firstly, your moto is really cool......nobody could have put it more simply than that, I think, deepdown, most of us are that anxious and it is most unfortunate that there are five days between sunday and saturday, and with weather considerations, we really need to work less and fly more.


As for your problem, If you have not crashed the plane and repaired it, Try the following,

1) control linkage binding, any push rod wraping around each other. This is easy to identify, deflect your rudder back and forward as you rotate the aeroplane around the prop, simulating a roll. Observe for uncommanded elevator movement


2) Is your new spinner one of those heavy chrome shining ones.
If so, I suspect that it is gyroscopic precession that is causing the pitching as you yaw. This is also quite easily simulated on grd. Just run your engine at 2/3rd, hold your ship at the c/g so that any resultant pitching will be apparent. deflect your rudder and almost always there will be a corresponding picthing. If so, repeat the process but using increasing or reducing throttle setting. Gyroscopic precession is dependent on RPM, Mass displacement from the prop axis and direction of turn. Solution, use a lighter spinner.

3)check you radio tx. But do it about 10 paces away with the antenna fully retracted. sometimes at weaker signal range, error signal emitted by a faulty tx is more apparent.

Good luck.