plumber

I just got a 1988 Radian to teach my wife to ride. The bike was free. It has been sitting awhile. I drained and cleaned the gas tank and carbs. Now I can get it to start with the choke fully on, but as soon as I turn the choke off the bike dies. I know nothing about these type of bikes. Do I have a carb problem a timing problem or a valve adjustment problem? Dont know where to start. I did replace the needles, seats, and floats in the carbs. I did check the intake adaptors and they dont seam to be leaking. Like I said the bike was free and I really dont want to take it to a shop, and I also enjoy working on thses type of things. Any suggestions?