I also think I might have chipped a piston too.. I was checking out the old front plugs today because I decided to put in new wires just for the hell of it and on cylinder 3 plug the metal hook part is bent in slightly. I'm pretty sure I gapped them at .050 and this plug is now .030 but I have yet to see any misfires on cylinder 3 so hopefully its just a flook or a really small piece. My cylinder 1 plug was also almost siezed in the head and it's pretty dark and orangeish on the electrode which is weird because all other 5 plugs looked fantastic. I wonder what the deal is with that..
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