Without knowing what you have and why it is as it is, this is impossible to answer.

Jonnysplits is right for some cases. You have not given enough info though for me.

What airplane?
What radio?
What servos?
What kind of linkage and clevis's?
Is the plane currently flying balanced and flying hand-off? If so there is nothing wrong with it staying at 82% forever (no need to fix what ain't broke).