Getting ready to install a header on my 60, I've been told by a couple of people to double up the gasket, I know it sounds just plain wrong but they insist it will reduce the chances of the infamouse cruiser exhaust leek, and works well on stock manifolds as well, I don't know, I do know I don't want to pull it back apart later, the leek I've got now is absolutly annoying and am going to surface the intake as I'm sure it is warped also.....any thoughts about this double-up?, And it would be great to hear from someone that has actualy done this.Any advice would be helpful.