I got this buzzing noise on my new throttle servo. Replaced both steering servos with new 5765 and thought while I was at it replace throttle too. Had a Hitec 985 which at the time was a step up. Spoke with DDM (great guys) recommend using the HS7945SH. Installed all three today steering servos other than being dual and not the easiest to set-up all three went OK. Only issue is the steering servo will not stop buzzing ever just a little bit. Did not have that with old 985 unit. Any ideas????