First off hello to all and thanks in advance for any help i recieve from this. First time here so here is the question. Long story short bought the boat this year i am 3rd owner of this boat. I can start the boat and it will idle fine long enough for me to get it in the water and put my truck up. Run to the first spot i want to fish still fine. Crank the boat it will usually crank and idle fine until i put it in gear. Then it will choke out is the best way to describe it. When i start to crank it again it will idle terrible and still choke out when put in gear will also choke out in neutral if i don't push the choke in repeatedly. I have been searching the forum and have several possible answers. I know my carbs need to be rebuilt. But this boat has ran good until about a month ago. This started all at once in a tournament. We ran to first spot ran good went to leave that spot got a 100yds away it died i wiggle wires and found my bulb was soft so reprimed reseated plug wires and everything worked after that until run to weigh in almost to ramp slowly started losing rpm till throttle handle all way down but but was moving at idle speed and running like it was bogged down. Does anyone believe this could be antisyphon valve over something else. Just the way it was fine one minute then terrible the next leads me to believe it could be trash in that valve or it is just old and not operating properly all the time. Or is this valve something that when it goes it goes not an intermitting