Hi Jenny,

The other channels are OK and it would happened during level flight at half throttle. Anyhow I am moving CG forward on all of my models just in case they might be slightly tail heavy. I usually balance them in the mid range, if they say 90-100mm I would balance at 95mm. I am hoping that it will help. But then again if the CG would be the problem, one would think that every flight would be effected, cheers Jan