The throttle push rod is a cable actually with a plastic guide. I have a plastic ball link on the carb and a set screw on the throttle end. No, it is not a mini servo. It is full size, but it is just a standard servo. I have everything as far back as I can get it I think. The rx battery is at least 22 inches behind the ignition module, and probably at least a foot behind the throttle servo. I don't believe I can relocate the servo any further back. I will try a new servo tomorrow and see if I get any change. Thanks for the input!