1966 Dart 225 with Holley 1920

I'm having an issue raising idle on my 1920. I have the idle adjustment screw bottomed out on the screw spring so so can't screw it in further. I need just a bit more rpm to stop it from stalling when I put in gear. Could the timing be off? I have it set about 2 degrees btdc. Fill confession, I did the rebuild of the carb, other than the idle issue only other issue is a bog if I jam the pedal from a stop. Otherwise it runs fine. Only issue during rebuilding was I coyld not get out the checkballs.20210704_121017.jpg

Thank you for any advice.