Help, Slight set up problem

[Heli InCider]

Hi, I have an AR7200BX on a 450DFC that I am trying to set up for a friend.
I have bound it to his new DX9 Black, all connects ok.
It was previously bound to a Silver DX9.
When programming the BX I got to setup G, swash levelling and the RH servo was high.
I pulled the horn and re-positioned it close to 90*.
Now the fun starts!!
When you try to fine tune the servo positions using the elevator stick the servo moves back to where it started when you let go.
It is really close to 90* but if you come out of programming for normal flight the servo is then really low compared to the others.
Trying to set up the collective range and cyclic limit is also impossible as the servo starts low in those adjustments also.
Any ideas anyone, hope I have explained it OK.
Thanks.

[waveydavey]

You need to activate one of the servo centering before setting 0 degrees. IE select one servo with the aileron and double shuffle then centre.

Edit : Apologies select with rudder, will be servo 1 first and then centre everything, arms, swash, links, and blade grips. Use the servo centre feature only if you can't get the arms 90 degrees

[kenny d]

I've sent you a message , Kd