79 kz750 twin fires but won't start?

Ok... first time post here and I need some help. I have a 1979 kz750 twin chop. I have rode it for years, i love this thing. Life got in the way.. blag blag blah it sat and needed work to live again....But now I have been trying to get this thing running for quite some time, 2 months. And now I'm almost there but it won't fire off. It has new gas in it. I have rejetted the carbs for straight pipes. 145 mains 50 pilots. I have a brand new battery and the bike has been wired simple. I have a brand new rewound stator, valves have been shimmed, No electric start just kick, so in theory... it should start.... ok... I just replaced the fuel lines because I wasn't getting enough fuel to the carbs due to a nasty inline filter (my tank is a bit rusty) but now I have sufficient flow but when I turn the key turn on the choke and kick, it wants to start, like it will fire, but it wont fully start. I don't know what else I would need to do... and its driving me crazy. Please someone help me I'm beating my head against the wall..

When you replaced the jets, did you completely disassemble the carbs, soak all the parts in carb cleaner, and carefully insure that all the jets and tiny passageways in the carb bodies are perfectly clean?
The tiny pilot circuit passages are the first to get clogged up with dried fuel when a bike sits for too long.
Did you double check the fuel levels using the clear tube method?
Did you install a new fuel filter? Any little trash from the tank will clog the pilot circuits. I recommend a Golan filter. They are expensive up front, but they filter smaller particles than any other filter I have looked at, and the filter material is cleanable and reusable.
They make models to fit several hose sizes. Be sure to get the one for the size on your bike.
golanproducts.com/product/super-mini-fue...r-5-16-barb-fitting/

79 kz750 has no magnito requires good battery, grounds ect.... cheep pod filters will block idol circuit pin hole along with the 2 other air passages at air entrance..been there done that..