What is your setup? (engine?, throws differ from manual?, change anything from standard?)

I'm still having problems with this plane .... it still dips the right wing if I pull back on the elevator stick too much with elevator at the manual's throws.
It always falls off to the left as it approaches a hover, when I climb straight up, no matter how much right rudder I apply.
Its tendency to do its own thing when expecting something different is going to make me crash some day......

What upsets me the most about it, is that I have a flying buddy who has both the 1.6 Great Planes Extra, and a .40 size Great Planes Extra - I've flown them both and they are great ... they do exactly what I would expect. But not this Seagull .... I'm considering scrapping it and moving the engine, radio, and servos to a new plane.
In some cases, it appears you really do "get what you pay for".