[jhirasak]

If you are sure that you are too rich on the squirt, I would recommend that you increase the exhaust jet size instead of changing the nozzle size. It is also less expensive to replace the exhaust jets since there are only four of them as compared to eight nozzles. However, replacing the exhaust jets are a bit more trouble since they are located in the main body below the float.

Right now, you do have zero bleed so all of your pump volume is delivered with each squirt. As a starting point, I would recommend a 0.50 exhaust jet and then you can either choose a larger exhaust jet if the shot is still too rich or choose a smaller exhaust jet if you get a slight stumble upon acceleration.