I like to keep things simple. Have your carb arm on either side. I like muffler side, puts needle valve on left away from exhaust. Put a Great Planes or SIg screw-lock push rod connector on throttle arm, use metal retainer.Put in outer hole on arm , you can also put one on servo arm. I really like Hitec adjustable arm, you can get good travel from it . For the push rod I found 3/64 piano wire is strong enough & bends enough for me. I use a z-bend on servo arm (cheaper). You may need to make a little longer Allen head screw for connector. This set-up works on both two & four strokes. It`s like sex,try it you might like it ! big max1935