Coolant weep around head nut

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I coat the threads of the studs going into the block with Indian Head shellac.
While still wet I adjust the depth of the studs into the block so the tops of the studs will show the same amount of threads above the head stud nuts.
Allowing it to dry and set before installing the head will generally keep the studs from turning when the head is installed.
Just makes for a nicer looking job when done.