Trouble with set screws!

[A RC Dude]

ok, well i finnally got the new BL e-maxx diffs for my e-maxx and installed them. then i went outside to drive it, set screw (witch had thread lock on it) on the pinion comes off. reset it with thread lock, came off again. then i clean the motor shaft and inside the pinion out and reset it with a ton of thread lock and stripped out the set screw getting it in their so tite. then once again it came off. i finnally got it to stay by getting a new set screw, cleaning and slightly scraping the motor shaft and inside the pinion, plus cleaning out all the old threadlocker and re-applying it. then it ran great this past week and now the set screw inside the tranny on the input shaft that the manufacture set came out.



is their anything i could possibly do to have any better luck with these things? i'm already going to have to order a new gear and pinion for the tranny but can i do anything to make sure it's not going to come out again? or do you think i should scrap this tranny and get the new e-maxx tranny (would it fit?)?

by the way, i'm using great plains blue, removable threadlocker.