I have run into this on a few planes I've built recently using Hitec 635's and 645's. After the servos get a little worked in they should settle down as long as you do not have them in a bind. The Hitec 6635 servos I use buzz all the time because their always looking for center.
ORIGINAL: wilinfla
I am installing a radio in a used plane that I purchased and I seem to have a lot of buzz from the servos. I am using a Futaba TC7AP with S3004 servos. The control surfaces seem free with no binding, but the servos seem to buzz when they return to center until you play with the sticks. I usually use Airtronics and have never noticed it this bad, is this common with these servos? Is this something I should worry about? I have always heard in the past that it will put a drain on the battery pack, is there any truth to that? The flight pack and servos are all new out of the box. Thanks.