I've been around the block, and hitec has some pretty good gear trains, but their servo's are junk in performance IRT JR or (I must sin) Futaba servo's. Every JR digital servo i've ever had, has had issues going back to a consistent centering position. This has ranged from the 5245MG's to the 7955Tg's. I'm saying this in response to them being installed in pattern planes and other precision aerobats and jets. And i say it is the servo's b/c once i replaced the hitec servo's with either a high-end JR or futaba servo's the centering and trimming problems went away with only replacing the servo's.

I know people are going to say "i've had great luck with hitec servo's". I'm not saying you aren't, i'm just expressing my experiences with them. The higher end hitec's available now are much better than the ones i have used in the past, but I still notice centering problems when going from 3D style flying to a precision style flying after the servo's get a good work-out. I don't notice this with the JR 8711's or others of similar performance specs.