250-500cc tmxx38 overflowing

Try this first. Take a screw driver and tap the float bowl with the plastic end. This may dislodge the stuck float.

Finally got a day off work and the kids at school so ripped carby off and pushed the tab in slightly, back together, through the ridding gear on and hitup the "Enduro loop" 5 min ride away. Stopped at halfway point and put bike on stand.." NO LEAKS", no overflow and not wasting anymore fuel.. Yeah boys thanx for help!!!
Also leaned carb slightly to highside so that may also help when on the stand...

Question Guys. I'm having same troubles on my 09 wr125. What size needle and seat do i want? I see 1, 1.5, 3? does mine say somewhere on it?