added cooling holes in head/block deck & matching holes added in head gaskets, how cant get em to seal (combustion leaking into & pressurizing the coolant). Any recommenbdations on what to ring the perimeter of these (added) holes? "the right stuff" or hondabond or hylomar or?.I know you ain't supposed to use anything on em but I have no choice now. I've changed em (3) times! to no avail. No Mas! here is a pic of my handiwork (IF I can get it to post).