Just put all new servo's on my raptor 60. 9254 on tail 3001 on throtle and 9252 's on the rest. Problem I'm having is there all buzzing. Adjusted the epa setting's in the radio and can't get them to stop buzzing . Is this normal for new servo's or am I missing something. Fist time I ever had brand new servo's was wondering if this might be something they do till they beak in?Thanks