motor issues, carbs dirty maybe?

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pulled apart one of the carbs pre-knowledge tonight (very carefully). they were clean as a whistle. factory clean looking. cleaned it anyway, then pulled brass screws in stack and sprayed cleaner in there too. checked fuel filter on front of fuel pump and that is clean too. i have already checked fuel pick up and the anti syphon valve has already been removed. im at a loss. might be another bad vacuum switch, i heard they made a bad batch from my mechanic, maybe the good folks at omc were kind enough to send me a bunk replacement the first time. not sure how that explains the loss of power, although it would explain the godawful beeping. i have an inline filter for fuel management (which i dont use) that i may remove and see if that does it. blew off work to catch fish monday, and now im paying for it w/ a crazy week. going to try and water test thursday maybe, any more insight prior to that would be much appreciated.