V6 3.8 litre I/O with Rochester 4 bbl

I am now confident that the problem that has been plaguing me the past few
seasons is a sticking fuel float ... sticking meaning not stopping the fuel
flow. Yesterday I started the boat up in the laneway, it would not idle, had
to keep the throttle open a bit to prevent stalling, shut the engine off,
had fuel overflow coming out both sides of the carb until the fuel pressure
dropped (mechanical pump) ... which is basically what happened maybe 3 times
last season (but I did not notice the fuel overflow) and which would
eventually clear itself.

So, today as I was about to remove the carb, thought I'd try again ... well,
it started right up, idled fine, all ok.

So here's the thing ... I do not really want to dismantle that old Rochester
4 bbl if I can possibly avoid doing so. Has anyone had the same problem? Was
there an easy solution? Maybe pour in the carb cleaner and let soak
overnight kind of thing?

Thanks.

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