I'm finding it hard to see a "water in the tank problem". I doubt that an electric pump or manual pump could circulate fuel from the tank to the carb in the time it takes to turn right at a corner. Even with a total loss of FP to the carb, there would be enough fuel in the bowl to run a right turn.
Does your problem happen at a stop and go right turn, or whenever your turning right as on a curve in the road? Knowing exactly when the problem occurs will help diagnosis a lot. Right turns are sharper that left turns from stop and turn for example. I don't believe it's float level because it would do it left or right as fuel slosh works both ways. It wouldn't hurt to check though
because your betting on the guy who set the floats at the factory has a perfect record and never makes a mistake, LOL