Trying to get new engine to idle decent runs good otherwise. Originally it would instantly die when putting in gear so I richened up the idle and it would idle at 1000rpm in gear. Should I drill the holes in the throttle plates?
Here is the last tune I tried and it was the worst. Mixture screws had zero affect.

Gen3 Hemi 378cid 13:1 comp
cam 247/251@050 605 lift
dual plane intake
carb quickfuel 950 jets 74/84 PV 4.5 transfer slots both pri and sec opened to .020
vacuum 12-13"
8" 5000 stall Converter
latest timing curve