I have a 1975 evinrude 9.9hp model 10524c. my problem is with the first start when motor is cold. set it to start pull full choke two to three pulls it starts, runs smooth but smokes alot. when i put it in gear it stalls out, 5 to 6 pulls to restart. once i get it going after a few min every thing is fine. it will run slow or flat out no problems,turn it off one pull to start the rest of the day,and no smoke. I have tried putting the choke at different settings on the cold start, but the same thing happens as soon as I move the throtle it stalls out. can any one help?