Shocking the screw actually works pretty well.....if you have an All alum body driver....you can SMACK it with a set of plyers or a small hammer and that ushally breaks it free. heat is another option that works most of the time.....a small butane torch or even a soldering iron can be used to heat the screw and help break the Loctite loose.

when pulling the motor....pop the ball off the carb linkage.....then remove the throttle horn in a position you can easily drop it back onto.