Re: What mod should I get.
Ok, got an NGK B6HS in there. Unfortunately I half stripped the hole when putting it in. Used a little Teflon tape on the middle of the plug and now it seals. Going to see if Bikeberry will do a warranty replacement on the head since the hole was not run straight in the first place.( had to tighten too much to keep it from leaking) I ran it at gap .03 and it was better and took it up to .04 and I get that hum about 50% of the time now. Should I make it any wider? Or is that crazy talk?