Originally posted by jneesy
go back to os type f ( the only 4 stroke plug) and run more fuel through it . keep trying it will come around
Sorry, I have tried 6 different plugs, the Thunderbolt is the best with this engine and fuel. Come to think of it I didn't switch plugs when I switched fuel. I will try the OS F and Fox Miracle Plug again. But, I can tell you my old TT FS did better with a Fox Miracle with 15% Wildcat, though this one did better with the OS F, but best with the ThunderBolt.