So I am new here and maybe some of you can help me out. I have a 79 Shovelhead. The Plugs foul within an hour of install. Im running a S&S I believe its an E series. Ive replaced the Points and Condensor and the Plugs. Any help would be apreciated. I dont know the Actual mileage. I've only put about 2500 on it sice purchase about 5 years ago. I didnt have my licence the past few years so its been in storage. I rode it last year and it rode great. i just broke it out for the season this year, and I got almost a day out of it before I started haveing isssues. I just put on a K&N air filter. It seperates the cover from the backing plate about 1/4 of an inch. could that have anything to do with it?