hotprops wrote on 03/05/15 at 20:57:17:ok,so what is the most likely part's to go bad, float getting heavy,seat and valve assembly or o ring or other ?
You will just have to take it apart and see. I have seen posts on this thread that have had bad floats that were leaking fuel inside, some with sticky hinges or needles. I took one apart where the ethanol had started to corrode the aluminum part of the needle and the white fuzz had pushed the rubber tip crooked.
To access the little screen above the seat, you need to remove the screw and clip and then pull the brass seat out of the float body. On one carb I did I needed a new O-ring there...as the original was in poor shape.