I have a 1983 mercury 150, Ive had it for about three years and it has never ran right. I have posted on here before but never figured out what was wrong when i would give it throttle it would bog down really bad, I could keep messin with it and it would finally take off and run perfect untill I slowed down and then the same thing over again, thought it was the stator I replaced it and the same thing. Has good compression carbs rebuilt I drilled my prop so the motor would wind up quicker and that fixed that part. It idles fine but if you try to go slow it still has sort of a miss and the engine runs rough still kinda boggy, but if you give it some throttle it smoothes out and gets on plane quick and runs great but if you slow down it just doesnt run smooth. If I rev it up in neutrol it doesnt wind up fast like it should, I am out of ideas, anyone else have any guesses. Has new plugs put seafoam in the tank hoping that will help after time.