Mine has gone through 3 plugs in 50 hours. Can't say it will help but last time I noticed that if I moved plug wire while running engine would sputter. Removed insulator and snipped 1/2 inch of coil wire and reinstalled insulator. Has not fpuled plug or skipped yet. Still carry two spare plugs. Others have suggested running a hotter plug however I am hesitant as after warm up it runs very lean.