[1upfront]

One sure way to find out is doing plug chops that will tell you if you need to lean or richen your main jet, after a plug chop if your jetting is correct the plug should look a mocca coffee brown color. I got a question that might help does the bike sputter or miss at wide open throttle if so you should probly go leaner on your main jet always perform a plug chop after every main jetting alteration, don't make more than one jetting modification at once, and always take note of what jets are in the bike that way you can tell what it was that you did that helped. Once you get your main jetting dialed in then you can work on your slow jetting if necessary.