RE: Avistar with OS 46FX climbs by itself.
I have 3 Avistars, one has a Magnum .46 XLS, the others have .40 La's ,and all of them do climb a little as throttle is increased. But none of them climb to the point that I can't trim it back to level flight with the slide adjustments on my radio. I would definitely check your throws and make clevis adjustments before I put shims on the motor.