WHO KNOWS CARB TECH UPDATE

You didn't give us much information, so it's hard to guess. However, I can tell you what happened to me. About 12 years ago, I put a 750 CFM Edelbrock carb on my mildly modified 340 (about 375HP). I went from a 600 CFM that likely needed to be rebuilt. It ran GREAT. Acceleration and tire burning were great. But every time I drove it, you could smell gasoline. I dropped the primary jets down by 2 sizes, and it made a huge difference. There was no more raw gas smell when I cruised around, and I still had the power. It sounds like you are on the right path. You should consider installing new plugs. If you were running rich for very long, the plugs might be pretty sooty/fouled. You could, perhaps, clean them, but plugs are cheap.