Yep I'm getting what you're saying. The ONLY leaks were coming up bolt holes and I took @str12-340 advice and used Permatex and it solved it. I guess I'll have to chk 318 heads I have on shelf to see if holes are open or not. I used thick gaskets, can't remember if Fel or MP.
I can't add anymore than what has been posted by everyone else except the Permatex worked lol.