my 250r is leaking fuel out of the overflow and is bogging down in all gears when i twist the throttle. i rode it today and it didn't bog at all it seems like it bogs when its hot. [img]i/expressions/face-icon-small-confused.gif[/img]

 

Try taking the carb off. Remove the bowl and clean it out real good. Sounds like your floats may be sticking. Hard to say without seeing it.