2004 CRF50 issues

I have a 2004 crf 50 that’s been sitting for a few years, it’s got a takegawa 88cc bore kit with a keihin pc20 carb. I recently bought a new carb same model as the one that came with the bore kit, proper jetting, adjusted valves, new gas, new spark plug, cam timing is perfect yet when I try to start it it won’t run at all unless it’s pinned and when it’s pinned it just putts forever and smoke lightly out of the exhaust pipe, tried everything need help :(

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