I'm looking for some words of wisdom on this. I don't know how well this shows but the L(eading) plug in this pix seems to be screwed into some kind of sleeve that extends the plug out. If you look at the trailing plug this is the norm for both plugs on the second rotor. Can anyone tell me if this is normal? And if not what in the hell am I seeing? I don't think its a stripped threads kit because the part that extends is smooth (No threads) I would seriously love some feedback.