Thanks I will try both of those, but they are brand new servos. They center pretty good, but I am sure it is not the servos. Say for instance you cut the power and let the nose drop. It does the same thing that way to. This has got me completely stumpped. They only thing I can think of is that the wing incidence is chance with the different forces being applied to it, and that seems unlikely also as we strapped it down with about 12 rubber bands. I will check what you said but I am open to any other suggestions as well.