ORIGINAL: felixone
I am currently flying an Avistar, and loving it. I have had a couple issues but nothing that has kept me from flying it, and certainly nothing your instructor won't catch before the maiden flight. In case he doesn't I suggest you double check the CG, mine was kind of tail heavy on the maiden flight. Also I found that the elevator and rudder push rods were not long enough, and flexed too much. I replaced them with thicker/longer rods.
I had a beginner with a similar problem (rod length). I told him to just turn the servos around. Silly mistake but it was all it needed. Hope this isn't what your problem was.
