Hey guys, I have this 1980 sea king 9.9 took it it out today fishing in mi. never been out this late in mi. B4, anyway, I can get it to run good at low speed if I lean the mixture screw, but then it surges at full throttle, if I richen the mixture it runs good at full throttle but smokes and runs bad at low speed, is there more than 1 mixture screw? I only see the one on the top of carb. no I dont have a manual, and I am to cheap to buy one. ok have a good one, thanks, mike. a bad day fishing is better than a good day at work.