I have an overflow hose that hangs off the bottom of the carb on my Z250, and lately its been constantly dripping fuel (only during use not sitting in the garage) Its not even when doing wheelies, it just drips riding around the yard. stuck float or something?

 

yeah, take the carb apart and clean the whole thing and check the float level.

 

Instead of just jumping right into taking the carb apart, you might just try and tap the bottom with a rubber hammer. It may free up the float, but this will only be a temporary fix. So you'll probably eventually have to clean it all out.