Btw red can be removed very easily with a bit of heat. Just use a soldering iron in the screw head for a few seconds and its gonna be like there was never any loctit there...

Like most of you that responded to this thread.....I have never had a servo arm keeper screw get even loose......but.....if you're worried about it.....I wouldn't over-kill it with thread lock....instead....a little dob of varnish or fingernail polish on the screw wouldn't hurt....and besides.....when you need to remove the screw, a little acetone will release it. Down pressure with your phillips screwdriver is NOT good.

Flash

Carefull with the acetone. It will melt many plastics. Used to make plastic cement by putting plastic chips in acetone till it melted. Safer to use nothing.