Anybody know the answer to this. 3 yr old 20 hp Honda, runs great, starts well cold, but after a few minutes running... ie partly warmed... it takes maybe 8 + pulls to start. Tried varoius comb.s of choke cannot seem to solve it. Buddy with 9.9 Honda has similar prob.Must be some trick to it I guess. Cold it seems to do best with a couple of throttle pumps then full choke and goes 1 or 2 pulls. Help.....