I ended up not wanting to mess with this, I wasn't confident in the feeler gauges I had, I tried to gap them, and the stupid feeler gauges had oil on them for reason, are new feeler gauges oiled for some reason? I think I got lube on the spark plugs, so I decided I really didn't want to mess with it. I talked to the shop I go to, and explained to the main guy I deal with about the plug gaps, and he says, you never trust the "pregap" deal anyway, and he knows exactly what I meant by the .028 gap, because of the boost situation in the cars, tighter gap is better for boost, so he assured me he would gap them at .028, and that he checks plug gap before installation in any case. He only charged me $70 the swap the plugs, and he even told me about the special tool they use to gap the plugs, which is the caliper type tool, and he said that NGK are good plugs to use. Honestly, I'm pretty sure WOT is smoother. I have confidence that these plugs are better, I was reading about how they are better at handling the stress of WOT, and honestly, I felt I noticed a smoother WOT run after these plugs were put in. The old plugs were not gapped correctly anymore, either due to age or never being gapped correctly in the first place. The old plugs were fairly used looking, but nothing bad. The Ruthenium NGK's seems like a pretty good plug, I'm impressed so far. Hopefully its not the initial hype, lol.