OK I want to try the #72 starting jet for my 03 WR450, but can't find one. I must be asking the wrong questions. I tried to look up "starter Jet" in the Yamaha Parts CD but could not find it. Called Sudco, I think I pissed them off, Yamaha dealer parts guy's eyes glaze over and he starts drooling (I think I overloaded what RAM he has). Where do I get my hands on an assortment of "Starting Jets" so I can start playing?