Carb tuning, larger accelerator pump nozzle?

I tapped a #6, #8 and #10 hole in a piece of aluminum bar stock. Then just drill the set screw with a used Chinese tabletop drill press. Carefully center the bit to the bottom of the hex hole and drill away. Works fine down to .023. Maybe I lucked out and got a good chuck and drill press. Don't have a lathe anyhow ;)