I just set up three 8611's on a matchbox this week. This is my techique.

Set drive servo number 1 center (using arm then the + and - to fine tune center). Tightened up servo screw, then turned dial to "2 (the next servo in line) and matched center, then (with ball links visibly lined up with the screw holding the ball to the arm) set the (+ or -) to get the center aligned, then (on high rate) move the tx rudder stick extreme left (hit the (+ or -) to align the ball link with the screw. Then I move to the right all the way and do the same. Now, it looks pretty good, but the final step.

I pop the two ball links on then carefully hit the (+ or -) to eliminate buzzing at neutral (still on servo 2). I count each time I hit the pos or neg button in case I go the wrong way, just hit the opposite button an equal amount to get back to where I started, and then go the other way. It normally just takes a few blips on the pos or neg button to eliminate the buzz. I then do the same for each extreme. No buzzing.

Finally, I move the selector to servo 3, and do the same procedure for this servo. Its fast and works. There is very little, if any buzzing (unless the tailwheel is on the ground causing some binding, that is).

Its even faster the second time through when you forget and turn the Rx off before rotating the selector back to "0".

For more info, check the Horizon link. I've got pictures and a detailed article there on setting up multiple servos. Some info that may find helpful if you are doing this for the first time.

Cheers,

Don