340 fuel/ignition issue?

Finally up and running strong! New brass bushings for the primary shaft, new nitrophyl floats, and for anyone who's interested:
.101/.149 jets (no choke)
Rods are 67/52/42
.035 nozzles
Floats set at 1"
2turns on the AV spring
1-1/2 to rods screw
.060" drop on AV
Open 17/32" from choke tower
Idle screws 1-5/8 turns out
Timing set at 18/38

Settings based on the old Mopar Bible combined with recommendations from "Demonsizzler" (Lord of the Thermoquad) whose old posts I've collected from this forum and elsewhere.
Thank you all !!!