Do not use red loctite it really is supposed to be heated to be removed. Blue is what you want, strong enough to do the job but weak enough you can remove it. I suggest the stick 37643 or gel 24010 as they are easier to use in the correct (small) amount and are less likely to go where you do not want it.
Edit: Another option is self locking screws like can be found here at McMaster-Carr
http://www.mcmaster.com/#self-lockin...screws/=le47xf They are the screw equivalent of nylock nuts.