Header Leak??

I have been fighting a header leak on the number one cylinder since I put the headers on the car the first time 5 years ago. At first the double copper helped but eventually it started again. I rebuilt the motor last winter and added Eddie heads and the leak is still there. I even cut the flanges hoping that would help. Currently I have 2 copper gaskets and I cut part of a mr. Gasket cork gasket and put it on the number once cylinder. The leak is still there.

My next investment is a set of tti headers and yours should be too lol