One thing that's been forgotten is that to reduce trim change with power change, you adjust the thrustline of the egnine. If the airplane tends to nose up with power application, and nose down with power reduction, then you need to add some downthrust to the engine. Just shim a bit at a time. Small washers will do. While a properly-trimmed model should climb with power application, it should not strongly pitch up. The same would be for power reduction, the model should not strongly pitch down. In either case, the model should move ahead straight, and then smoothly move into a climb or glide when the power is changed.

I your model tends to go very nose-up and climb like crazy when you add power, do a thrustline change first. Don't mess with the incidence angles of the wing and stabilizer until you've eliminated everything else. A thrustline change can make a model settle down very well.

bax