Carb help please!

[V4beermonster]

Hi guys need some help/advice I've rebuilt my nc30 carbs, they have been stripped degreased and ultrasonicaly cleaned. I have blown all the jetways through all seem clear. Running 115 mains front and 118 mains rear pilots are #35 all round with RO road needles. The problem I have is the bike won't rev through the range cleanly it stutters like its running out of fuel. But if I put the choke on it will rev throughout. I have checked the pilot circuit and its clear. Diaphragms are in good nick. So I'm stumped anyone got any ideas

[johnnie5]

main jets are too small

[bikemonkey]

main jets are too small

What exhaust you got on there? Standard system with the fuel can?

At a guess I'd try a size up front and back

[V4beermonster]

No full ethos.but thought mains weren't used until 3/4 to full throttle

[bikemonkey]

No idea. But I'm running 120f and 122r with my half ethos. That was the sizes rick o recommended, and even then the top end doesn't feel great, but I'm gonna dyno the bike first once I've got my new carbs on and sorted.

[V4beermonster]

Well just dropped 125's all round and she's running sweet! Bloody bikes cheers for the replies

[johnnie5]

No full ethos.but thought mains weren't used until 3/4 to full throttle

yes and no

thats the theory

here some jetting charts of how carbs work

i particularly like the last one

[speedy231278]

I think this proves that for most people, women are easier to understand and predict than carbs... lmao