On that note, what are people using for spark plugs?
My owner's manual lists either a Bosch VR 5 NE with an 0.8mm gap or a Bosch VR 5 NEU with a 1mm gap. Unfortunately, I'm having a hard time finding those for sale at any of my usual online places. At ktmduke390forum.com they're saying that you can use a NGK LKAR8A-9 or a LKAR8AI-9 (KTM #75039093000).
Any thoughts on that? Also, what gap would you set on the NGK LKAR8A-9?