blaaster, theyre good i checked em a while back, and it has the jets that came with my toomey kit, i set it all up for our temp and elevation when i got it. i know its foulin plugs more cuz the rings a wearing, the comp is starting to get low i can feel it when i kick it, havent checked it yet but plan to soon, and ive been mixing the oil a lil thicker to jus to give a lil piece of mind. so thats not helping the plugs either.