Jetting is not hard to do but you are only guessing if you have no access to a dyno or have an O2 sensor installed in your pipes to get a reading of what the engine is doing. The days of reading plugs are pretty much over with the ethanol and unleaded gas. Plugs don't color like they used to. You can still see way lean or way rich but not fine tuning. Be sure you have screwdrivers that fit the jets very well so you don't strip them. If your carbs still have the original phillips screws holding the bowls on you should get some stainless allen head screws to replace them because those phillips strip very easily. Have some needlenose vise grips ready to turn them out if needed. The screws are 4mmX0.7. You may need a D tool to adjust the mixture screw, one can be made with a piece of brake line and just flatten one side. If they have never been adjusted you have to remove a blank that covers them at the front of the carb bowl in the carb body. Jetting can be done on the bike but it's easier to do off the bike. On the bike you may want a small mirror so you can see them. If you are doing this you should probably balance them too after you jet. You can easily make a manometer to do the job.

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