I had a coolant leak not long ago luckily it wasnt getting into the cylinders but it was wicking up the threads on a few studs.
What i did was after checking the heads plain for any warpage bought an oem gasket and used the copper spray gasket adhesive.I put 4-5 coats on it and reinstalled per the torque specs and its been good since.
The k&s gasket i had before just wasnt cutting it.