Just had carbs rebuilt and new water pump put in $560. Took it to the lake and it would only pull 3200rpm took it back because it used to pull 5200rpm they called me today to tell me it was a bad fly wheel and stato? The motor ran smooth at 3200 but i could not get any more out of it the fast idle did not work and i thought it was something to do with the linkage or carbs am i being taken ..i went and picked the boat up today and one of the magnets were off of the fly wheel.would the boat have even ran like this they are telling me this is the issue . I think they broke it removing it''how could this effect the trotle ..and the fast idle lever...now they want 760. More please help