V, sorry for not includeing my findings, which I posted in another thread. When hovering my UCD, it has a tendancy to favor the canopy, which indicates the need for up thrust on this particular model. This is the 4th one I have built, yet it is the first one that requires up thrust. All models, even when compareing the same model to the one built before or after it, are different and require similar, but not exact settings. So if you take the information you hold in such high regard and apply it to a model that unknowingly has an accidental 1 degree of positive incidence in the wing, what will the up thrust do in that situation? In a nut shell, all models are not created equall. Fly, observe, adjust or correct. Repeat as necessary. Joe