I believe I have the answer and that is to rebuild both carbs again, just to ask: the boat is bogging when first starting and have to ease it into full throttle, if I want to go from 0 to full throttle it dies, or sputters until I release back to idle. Does the same thing when edging it to 3000rpm. Seems to do good when I "pump" the throttle a couple times and runs well, also when it warms up it does fine, but after sitting for 20 mins, bogs down again; is this -- fuel pump; carbs ; don't know how to drive; electrical(plugs);water pump; --- I'm thinking carbs, this past week was the first time and the carbs were rebuilt a year and half ago. Boat is stored in garage, so no winterization -- . Thanks for helps.