my 02 utopia with a mercury 210 is giving me problems. when i take it out it runs like a champ for a good 5 to 10min after that it looses power wont go past 1500-2000 rpms. if i shut it down for 10 min it starts up and runs fine for another 5 to 10 min then same thing. recently the fuel pump, stator, both switchboxes, and trigger were replaced had an issue with only one bank firing. that was fixed now this issue. is there a thermostat that could be causing these issues when the engine heats up? not sure if this boat has a limp mode or not like my seadoo gtx limited, i get no warning beeps when this happens. at any time i can shut off motor and restart with no issues, just seems like when the engine gets to temp it causes this issue. any ideas or input would be greatly appreciated. thanks in advance.