Custom ESCs?

[Unsullied_Spy]

Red loctite on the grub screw is a PITA, I did that once and had to grind the gear off my motor's shaft because it would not come off no matter what I did to it.

I tried cleaning the top shaft and gear on my Rustler and loctiting it on and it held for about 1 pull of the throttle. It'll probably work better on a pinion because it's still a cleaner surface but on tranny gears it fails.