Leaky Spitfires

My headers also leaked in the same location as yours and like Dave said Remflex sealed this area up for me too. However, this weekend I noticed that the passenger side the gasket was pushed out next to the front stud (near alternator) and I had to replace it (they are made from soft material). The muffler shop that installed my pipes said that it’s common to have difficulty sealing the lower portion of the exhaust port due to center line fastening design. I try to keep that in mind while installing the headers. I would defiantly not elongate the holes in the flange.