Hello, I have just purchased a set of 4 G-Power NGK plugs from Amazon and I had a suspicion they make be counterfeit because of the profile of the center electrode tip. Everything else seems legit, but the electrode tip is a different shape than any pictures I can find of G-Power plugs on the internet. The only 1 picture I found that had the different shaped electrode like mine was from Napa. These ones are assembled in Thailand from parts made in Thailand and Japan, so maybe it’s a recent change in the plugs from Thailand as opposed to made in Japan?