In search I only found 200 posts regarding jetting so I guess it's a new topic. To be more specific... my 01 426 has the uncorked stock pipe, air box cover off, wire cut. I ride at 100 -1000 ft elevation. I'm guessing that out of the 1,342,986 members here, somebody has the same basic mods, and that one or two of you with these common no frills modifications has found the right set up. Leave it stock or...? My tool box is where I keep my sandwiches and gatorade... in other words, I'm not messing with it. Bad memories of taking apart a clock radio when I was 7. I will be passing these along to a mechanic at a kawasaki dealer... so please reply in basic, easy to understand mumbo jumbo. Thanks everybody for making this a great board!