idle to 3200 rich and at 2400 real rich.

Assuming a MP injector set up and balanced/flowed injectors all cylinders should be close....again assuming....

It is MP and had the injections re-cleaned and flowed, exhaust is EMI with +3
Did a few runs and had a look at the O2's and real black film on them

https://cimg8.ibsrv.net/gimg/www.off...f81bd461c6.jpg

Need to find some time between rain and other things, but will connect scanner pro and get some readings

Vacuum and how it applies: each 10 map or kpa is 3.3" of vacuum. So cruising "easy" if your at 70 map, its about 10" of vacuum, you can tune the motor around 13.5 in the 1600 to 2800 range IF your at 70 map, ie, low load, when your in the 80 map range, 12.8 to 13.2 or so is ususlly fine up to about 3400/3600. When you start hitting 90 map, i like to see mid 12's, when you start getting into 95+map AND near the tq peak, usually 3800 to 4200 or slightly higher, mid 12's , even 12.2 to 12.5 once your hitting 4400/4600 on up.
i give the idle whatever it likes, ive seen quite a few motors that didnt like 13+to 14 at idle even though thats what you would think of as "normal". You still need to take a look at the plugs too if you choose to lean out around 2800 to 3400, especially 7/8

Thanks for your thoughts. Have to agree don't mind the idle being rich if it idles good and it does, but may try to lean a bit just to see what it does. Was told number 7 was opened up a bit during the build and may have done 7 also. Will get into things and post back hopefully in a few days

No offense -- looks the flame needs to be super cleaned. That can cause rich running conditions.

Flame arrestor.

Thanks, Eddie removed the center mesh out of the stock arrestor, so all I have is the double screen, and its plenty clean, and can see clear thru the other side

If I took a pic above the FR you could see thru, the angle is misleading, and thanks for the thought