Breaking up help

There mostly just lead glazed. Pretty annoying issue with race fuels these days. I did see a timming mark near the base of the ground strap however. Can't tell if thats from cruising around or from WOT at high boost. Its kind of ashy. Just change the plugs alot sooner and you should be fine. I didn't see any speckles or any other signs of things not being right. Put in a fresh plug or 2 make 1-2 WOT passes shut it off pull those 2 plugs and put 2 more fresh ones in. Then snap pics of those 2 plugs. I have a feeling alot of the heat marking on the plugs in your pics is due to cruising around.
 
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