Have a 96 90hp ocean pro, starts fine when cold, runs great, but after i get to my fishing spot and want to leave it gives me an attitude and does not want to idle. I have to have give it throttle and quickly get it in gear before it stalls. Once its going it runs great again and will idle fine, but the same thing happens once the engine is shut off. I just had my yearly service done and asked the mechanic to check the carbs, and he said they looked fine, and the plugs that came out also looked fine. Anyone have any ideas?