Stumped

No I cleaned them up. Very thin layer of carbon. With the air-gap they were tan on the porcelain. It sounds incredibly unrealistic, but could it be too rich since now each cylinder is getting the full carb instead of half due to the air-gap being divided? I wouldn't think it'd stutter under WOT with too much fuel, but at this point I have no other ideas. Can richen it up a few sizes first then try the other direction.