1995 Ninja 250r carb troubles...

I know this isnt neccesarily moto but its all relative in my book haha. So I just bought a 1995 ninja 250 with 5000 miles on it, so its still pretty young, its just been sitting in my buddies garage for years and hasnt been ridden, never dumped, well maintained, just has been sitting. I have it running, and it rides nicely when your on it and cruising, but when I have it in neutral, it doesnt want to idle for very long, and once it drops under 1,000 rpms, it stalls out. We have the idle set all the way high, but it still only idles at 2200 at its highest, and only idles for about 25 seconds. When its running on the street in gear, it cruises great tho. There is also a very slow leak of gasoline coming out of the botttom of the carb and the idle knob....anybody know about streetbikes also that has an idea? Thanks guys!
P.S. The throttle isnt very responsive once the R's begin to drop..