Carter BBD tuning issues

I have a stock 318 with a Carter BBD 2 bbl. It was running fine before but quite a bit rich. I did some tinkering after looking at my manual to try and lean it out. I felt like it ran better but when I put it in gear it idled very low. I essex with the fast idle cam and the curb idle screw the mixture screws and now I can't get it to run smooth again. It idles well but as soon as I rev it there is an initial stumble but it breaks through and sounds rough. It only does it initially. I just want to get it back where it was. Does anyone know where I should start fresh? What should I set everything on? The fast idle cam is an enigma to me even after following the instructions in the manual to set it. Where should I start my mixture screws at? Any help to get it running smooth would be great. Thank you in advance.