Kaw Bill,
My 220's shut off was a bit touchey about where was the actual shut off point. I found that the lever needed to be level with the ground, rather than perpendicular to the inlet and outlet.
The shut off was probably leaky since day one, but only now, has your carb's needle and seat worn to where it leaks every-so-little while the bike sits idle.
& btw, regarding the "other" reply... Hmmmm... I sure can see why so many comedians can't make a living. ;)
Good luck with it.
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-01 RM250 (mine) & 01 RM125 (kid's)
-Senior A Enduro and Hare Scramble Rider.
"Yep, that 14 yr old A Class rider is MY kid; He learned to ride from ME!!"