Here's the deal, it's been a fun experience dealing with stupid emissions. The engine is timed perfect, advance is working, good spark, carbs are perfectly synced, idle at 700-750, ran it through 1/4 turn leaner than ideal running condition and here's my numbers:
Driving Test
Allowed Reading
HC 409 650
CO 4.76 0.30
NOx 4356 771
Idle Test
HC 1052 1264
CO 5.54 5.96
This is 4th time through, getting very frustrated, please help!!!