ATV Running Bad

I rebuilt the carburetor my 96 trx300 last year with a rebuild kit and new hoses. (I only use non ethanol gas)
Drained the carb and let it set up all winter. It will now crank but when I give it gas it will die. I replaced the gas and added sea foam. Let it run for about 20 minutes. No help. I checked the vacuum hose and it is clear. What do you think is the problem? I was thinking I should pull the carb and clean it again.