Mine has 5 flight and is incredible. Either at 3.75 or 4 in cg. How did u mount the axi? Did you use the goofy cermark mount? That shuold put the thrust line right right where it should be. It is always very trim sensitive to me at any given cg although it is more forgiving in the forward range. Hope this is some help as i just flew mine for the first time on sat. Keith