massive reconfiguration time again.

Then I stick to my theory. wrong heat range for the new cam and all the cylinder pressure. Not saying this is "for sure" the issue, but I'd try fattening up the carbs and running RN12YC. If it doesn't work, your out a little time and a set of plugs. BECAUSE...……. cudafever's picture is your plug, then I go back to my previous statement, it looks blistered. You may find yourself adding some performance that will be noticed by the seat of your pants
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I really think this should be your first step. back to the basic.
known good stockesh plugs, stock jets and metering rods.
run test and then re read plugs.

Remember this is not a stock cam and neither was your last one. There will be reverso(exhaust gas into the clean Air/fuel at idle) that will fool you on the spark plug read.
You need to take it on a good cruise and pull over and look at your plugs. need to drive it long enough to burn of all the evidence of the idle vision.