There was a post on here not too long ago but I could not find it on how to fix this. I have no leaks and my primary blades have not been drilled. Wierd thing is, I had this carb on my 383 and had no noises from it. I did change the jets and power valve before I put it on this pretty mild 454. Should I drill the primary butterflies? If you see anything else wrong with this picture let me know.