An Evolution 10cc gas engine installed on a Great Planes F-1 Rocket EVO. I would like to reposition the throttle arm 180 so it can line up with the servo pushrod. Theres an allan screw on the collar and a brass screw through the center of the collar which i believe is the idle needle assembly. Is there a way to reposition the throttle arm without affecting the carburetor / idle settings? Thank you in advance.