7 April 2018 - ignition issues - misfire/no fire

I have noticed now that the carb has been replaced that the ignition also has issues.  There is a miss at idle and probably all engine speeds.  I thought I would start with checking connections, voltages and resistance checks.  So far they are all good.  So I am considering replacing the MSD 6 Box or just removing it and going with a less expensive setup.  The MSD distributor and MSD 6 box were installed in 2002.  Today I installed a replacement MSD igntion coil.  The old one was an MSD 8222 unit, the new is the exact same unit just new.  I installed it but the miss is still happening.