Fiddling around with the jets like this really isn't difficult at all, but if you've never done it before, you'll have questions...don't hesitate to ask. Edit: I should add that you'll be dealing with little springs and O-rings and so on. Make sure you're working in a well-lit place and you ought to lay down a clean sheet or something under the bike to catch dropped parts. In specific, I think I remember there's a tiny O-ring underneath the fuel screw that may or may not drop out when you remove the fuel screw. Then when you take off the fuel float, the fuel needle may drop off, etc. If I recall, the shaft that the fuel float hinges on is just a friction fit...you can very gently push or tap it out some way.