View attachment 1715425836 View attachment 1715425837 Here are a couple of plugs. With an otoscope I see I have a medium gray band halfway up the porcelain. (I believe the bottom of the porcelain is mostly WOT?)
With the Eddy 750 I could barely get any color at the very bottom no matter how big I jetted the secondaries.
Edit: The plugs are from running 91 octane "real gasoline"...
