I have been lead to believe that there is one speed that a given plane will fly for any one AOA. Add throttle, the nose rises and the plane climbs at (idealy) the same speed. Decrease throttle, the nose drops, the plane decends at that same speed. All of this with no trim changes. But in reading several of these threads re: thrust vectors, CG , AI, etc. adjustments, the plane should trim out to fly straight and level no matter what throttle setting (at least from 1/2 to full). Sounds like there is a conflict here. I've been caught off base before.