Can anybody gimme a quick rundown on the exhaust cam mod for the 426's. I was looking on the thumperfaq website, but I am not sure if all that info applies to the 426 as well. I know 99% of that site does, but not sure about this. Also is it just an adjustment, or is the exhaust cam mod the complete changeout of a WR cam for a YZ cam. And for my final question does anybody know where I can see online service manuals. I know the yamaha site wont let you see the service manuals online. Thanks guys.