White brothers R4 Jetting on 2000

I just picked up a 2000 from a nieghbor down the street. It has a white bros R4 Exhaust, Headerand all. I called WB and found that they were (PIN HEADS) did not want to answer any questions.

I am going through the Bike Now doing the break in maint on it. I do not know if Carb has been jetted or not have not got that far. Any suggestions or anyone out ther with a WB r4

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