95 katana 600 HELP!

[Tyldrvs]

I bought a 1995 Suzuki katana 600 with around 1050 original miles. It’s been sitting a while I got as a project for the winter. I have redone the carbs with original Suzuki parts when I start it up it idles good but full throttle won’t redline when I give it 1/4 it redlines. If I give full throttle it goes up around 9k then bounces down and up. When riding it pulls fine at some places but through different gears it spits and sputters pretty bad.
I have replaced the all carb internals I could replaced and thoroughly cleaned them got new diaphragms and all tried my best to set the floats around 14.6mm and a/f screws 2.5

[RoXtarLeo7]

Does yours have a throttle position sensor? Mine is a couple years newer and has one on the right side. It sets up 0-100%throttle. Helps with ignition timing. Even though it’s a dumb carby

otherwise cover the basics. Random reving, poor throttle, can be signs of air leaks. Make sure all the intake system is tight and sealed. Air makes the engine rev.

Are the throttle cables acting nice and smooth?

good luck