Guys, I've never had the carbs on my '87 Johnson GT150 messed with, let alone rebuilt. I've not used my boat much at all but now I'm living on the lake 100% of the time and want to get the boat ready to fish more. I'm thinking it might be wise to have my carbs rebuilt, do you think that is overkill? I pulled it out of the water to change the lower unit oil and change out my fuel lines, it starts up fine and on the hose it runs good. Should I not worry about doing anything to the carbs and see how it runs? I kept Stabil in the fuel. If I should have the carbs rebuilt, I doubt if I want to mess with trying to do that myself. Any idea what a competent boat mechanic would charge to rebuild them? Thanks!