putting the head on and have some ?'s

[JET]

I use the blue stuff and have taken them out after putting loctite on. I have had studs back out on 3 different occasions before loctiting them, none since I have done that.

I blow out the holes with air, spray it out with carb cleaner, then again with air. Then toss blue loc-tite on the threads and lightly snug down the studs with an allen wrench. I torque to 105 ft-lbs with ARP lube. Get much higher than that and you can run into stretching trouble. I still replace them once in a while.