After missing the last two summers, I finally got the bike rolling today. I've changed to Ninja 500 carbs and a stock 2-2 exhaust. What do you see in my plugs? I see: 1. The vacuum leak at idle, inner throttle shaft seals are out. 2. Too much timing. 3. Wrong heat range? These are the stock spec plugs, and I put a good 20 miles on these with a few hard pulls. Expected to see more color on the threads, but??? 4. Looking down the nose inside the plug, the base of the insulator has a white ring around it, and then the nose is black all the way to the tip. Go up 1 on the main jet and drop the needle a bit?, Pull the stator and shuffle the mag pickups a bit? Bike wasn't exactly smooth or powerful in top gear (15+ mph headwind, 17/34 sprocket w/OD 5th), it felt lame rolling into the throttle with a little pulse towards full throttle, and then just a blaaaaaaaaaah..... Felt great to be on a bike again. Thanks!