Jetting? 99 wr400 Powerbomb header

I just bought a slighly used powerbomb header for my 99 wr400. I know that I need to jet it when I put it on but I have no idea what jets I need. I plan to rejet it myself with the help of my climer manual I just have don't know what jets to put in. I have about 15 jets from my dad's wr250. So I'm hoping the ones I need are in there, but if not I'll buy them.



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