Plugs are pretty black right now, but all it's done today is sit and idle after I messed with adjusting the secondaries. They looked great shortly after I put them in, but it could be that I went too cold. I may try some RN12s. I've done nothing with the idle circuit and the 14s looked really good when I changed them out.
Even so, it still had the long crank issue with the 14s......but now that everything else is tuned good, that might change with the hotter plugs.