Header Install, need pointers

Copper head gaskets are nice, but they can leak too. They just don’t blow out like other gaskets. I used the Mr Gasket Ultra seals with my Macs (CRAP HEADER) along with some Permatex Ultra copper RTV silicone around the ports and on the both sides of the gaskets themselves, with success. Go from the inside out with your header bolts when installing and don't over tighten. You may need to re-torque them a couple of times after they've had a chance to heat sink (even with locking retainers). Remember to let them cool stone cold before retightening them.