Centering like the guy said, on an aileron application in a jet.

When I called Hitec about this (round 3 years ago) at first they wanted to tell me this servo was as a good as an 8411.

Then when we called Hitec about the servo not holding true in flight the response was "You need to pick the right servo for your application".

I remember thinking that the word "Hitec" was not in that response. Just "The right servo".

I never used their ***** ever again.

For more info learn to use the search function:

http://www.rcuniverse.com/forum/sear...mitbutton=+OK+