I was at the track yesterday and the first time I went out it seemed ok, then started it up for the second outing and it starts and idle's fine, but doesn't seem to like bliping the throttle. Try to leave the parking lot and it's stalls. Starts up again and I rev it up hard and it sings but after the revs come back down it dies again. It starts again but once I let the clutch out, the bike is sputtering and coughing, then dies with just about any throttle opening.
One thing I just noticed all the time now is when you turn the key on, usually you get and a click from the tail area and a little fart (best I can describe it

) near the fuel pump. Right now I'm getting a click but no fart
Just had the carbs cleaned over the winter and they were dry until a month ago when I started it for the first time after winter. I also used the bike at that time and it was fine. Of course, when I get home, everthing is fine but there must be something going on.
Thanks!