rebuilding carbs to stock specs

Hi everyone.I have a 77 KZ1000 that i am rebuilding.Right now I am working on the carbs and can not find the stock needlejets(258-0-6).I have talked to severl dealers and they all say they are discontinued and can not get.Does anyone know where I can get these jets.Motorcyclecarbs.com says they can resize smaller ones but I am wondering how accuate they will be.Again stock specs are needlejet(258-0-6)and jetneedle(5CN8) THANKS IN ADVANCE SMerrill.

For all the extra cost, buy a set of stockers of e-bay. A bike wrecker may part out a set of carbs, but don't bet your first born on it. I'll bet someone else will send you a link to z1enterprises. Seems to be popular site here. Never used it myself yet.