You may have to drill out the plugs that cover the mixture screws on your carbs. The screws are on the bottom side on the intake side of the carbs in front of the float bowls. I used a mirror to see mine. If they are plugged the carbs have to come off to drill out the plugs.

I wondered why the frisbee was getting bigger......and then it hit me. '05 BA - Mulberry/Graphite,128 mains,42 pilots,TBS needles,drilled slides,debaffled stock pipes,Uni,no snorkel