Well, 2 of the plugs came out with ease. The rest are ever so slightly budging, but I'm working them in and out with plenty of PB Blaster to lubricate things. I'm not forcing them, if one feels tight and only wants to move a tiny bit, I consider it a small victory, spray it, and will just come back to them tomorrow. Do they make a lubricant or spray that just dissolves carbon? Cuz that'd be awesome. I ordered one of those magnetic heat inductor things but if I can successfully remove these without it, I may cancel the order.