Hey guys I need some advice. I bought a Model 2121 Performer manifold for my '67 289 with a 4V Edelbrock carb and installed it in the spring of this year. It runs great, but I have oil leaks in the front of the manifold. The instructions said not to use the cork end gaskets and only use RTV. I did it this way and put down the 1/4" bead they recommended. I just pulled it off and the bead made pretty good contact, but not as good as I thought. A friend of mine said he had the same problem and recommended using the cork gaskets anyway. I was wondering if any of you had had this problem and what way would you go. Thanks for any suggestions.