Hey all, new to this forum. I have a trans am with a 383 stroker with a Barry Grant 750 Carb. The issue I have is whenever I crank the car the AFR starts out about 14:7 which is perfect. But within less than a minute it will go to around 12:1 AFR, then about another minute or two after it will go straight to dead lean. I don't understand why it is doing that. The car idled just fined before I let it sit for a couple months now all of sudden it doesn't run right. Any help?? I've messed with adjusting the screws and I've tried changing the primary jets in the metering block but it just makes it run even more rich the ultimately goes dead lean within the minute. I am STUCK!!