Carb Main Jet Confusion

[1999GZ250]

Question: I cannot find the definitive answer on which main jet to get for the carb. Some say the Mikuni large size 130-145 and others say the small size. So which is it? Also do I need anything to shim my needle besides thin brass washers? Some posts here have pics that show a notched needle with a clip and some show a white plastic looking washer. Thanks again


Here is what I believe is the correct main jet: http://www.ebay.com/itm/Genuine-Miku...FXv3sn&vxp=mtr