I just called my local Yamaha shop, Fort Collins Motorsports. I asked what needles and jets they had in stock for a WR426. The guy asked me what type of carburator I have, Mikuni, Keihen, flat or round. At that point, I was a little frustrated and caught off guard at such odd questions. This is similar to a encounter there with a girl in the parts department who didn't know who sold the WR426 and if it was a 4-wheeler or motorcycle and there was one 5 feet behind me that she looks at everyday. Then the guy proceeds to tell me that they only change the main for this altitude. I let him know that's the reason my bike runs like crap. He then tells me that I'm probably not riding it in a high enough rpm range and that's why I'm fouling plugs. What an idiot! For the EKP needle, they want $17.99 and they don't have any of the other jets as well. Is this something I have to order from them or can I get if from Sudco? I don't see the needles on their site and I'll do almost anything to buy these parts from someone else.