Slightly missing while idling

[Whitey]

 Hey guys think I have a slight miss while my  bike is idling!
 
Bike runs fine! What would be the first thing to look at?
    I do have the red eye kit on it to eliminate the pair valves!

[old2soon]

Plugs themselves clan and gapped Correctly? All plug caps snug on the plug? Good intake runner O-rings? All 18 clamps on intake runners snug? Good spark plug wires? RIDE SAFE.

[WintrSol]

Also, a good carb sync?

[gordonv]

1st thing I always suggest with ANY kind of running issue, a heavy dose of Berryman B-12 carb cleaner. 1/2 can with a 1/2 tank of fresh fuel (Not available in Canada).

If it works, switch to Chevron fuel with Techron (another carb cleaner to try).

I start each year of driving off, with my first tank of fresh fuel after storage, with the B-12. I've had fluctuation of rpm while idling, but has cleared up after doing the above. Some times this take multiple doses, and even a switch of carb cleaner. Seafoam is most likely the least harsh cleaner, and gets the least results, but have been report to have made an improvement.