Can't get these damn headers to stop leaking COOLANT!!

Yeah. You need to use the high temp ULTRA RED permatex. But, the bolt holes MUST be clean and dry. Drop the bottom radiator hose off and drain that joker good. then blow out the holes and after that, use some brake cleaner to assure they are CLEAN. Let um dry completely after that. Then coat the bolts GOOD with the red, tighten um down and let it sit without coolant over night. Problem solved.