i had this same problem on my motor. stage v heads and mopar performance x-ram(has very bad port alignment on bottom of runners) I glued the gaskets to the heads with 3m weatherstrip adhesive and ran a thin bead of silicone around each port. 6 years and no leaks. I have seen over tightening of the intake cause the heads to leak water out of the corners, retorqued and it was fine