Set screw will not budge

[brad55102]

Traxxas 3.3 carb, the throttle arm part number 5243. This is the piece that hooks up to the slide and moves the slide in and out. It has a set screw in it, this set screw must be loosened to turn the throttle arm. I must turn the throttle arm to put the engine in my t-maxx. IT WONT BUDGE i can't move it at all. Do you have any ideas?

 

[Racer 1966]

It may have high strength loc-tite on it. If so it needs to be heated fairly hot to loosen it up. I haven't worked one myself, have you tried turning the opposite direction to see if it is left hand threads?