Nobody seems to want to blame the air gap intake, [/quote
Before this carb on the same engine i have a regular avs 800 carb and im not noticed this problem with that one and im same always reading plugs with that carb to, i only switch to the avs2 because of all good i hear about it but in this case it become a problem instead, just a thought.One more thing is that the afr readings is very erratic to, Thats why i think maybe a street fominator intake would sute this combo better
Read the two quotes
No one want to blame the intake
A different style carb didn't show this issue on this intake.
New carb shows the issue.
Maybe your problem is the new carb, tune/fix it or put the old carb back on.
Or you can spend more money on another intake, your choice.