A tear down is recommended first to see what you have. The recommendation from many is to keep the stock Keihin brass parts if they are still there and usable. Quite a few sources made replaceable needles and jets, but careful scrutiny with measuring calipers show most of them to be out of spec quite a bit. Some may have been on purpose: I have some that the needles were about 0.125" longer. May have been that makers attempt to produce better gas mileage.
Randakks kits and info clearly detail this and he makes no claims contrary. The expensive parts beyond Randakks are the float needles and valves which most also recommend using OEM Honda. That's another $100 on the bill at least.
For identification, as I remember, the Keihin parts have a small k and a star symbol on them. Run fast away from Sabercycle. I had a set of cheapos from eBay called TruJet or something that used a rubber that exploded in size when in contact with fuel. Viton is best in the long haul. When you add it all up, PistolPete offers a pretty good deal. I am not sure if float valves are included in his rebuilds, but it does include new shaft seals. He stands behind his work.
Boiling the carbs in distilled water prior to disassembly saves a lot of frustration. It softens the varnish nicely and allows quick cleanup if done while still warm.
opcorn:
