Wrong carbs?

[mechaneer]

I have a 1993 Bayliner Trophy, I believe the motor is also 1993. It has a Mercury 2 stroke 175 hp 2.5 liter motor on it. Serial number 0D262403. Based on my research, it looks like this motor should have Walbro WMH-33 carburetors on it. I removed the carbs and there are 2 of the WMH-2 carbs for the top and middle and a WMH-1 carb for the bottom. How different would the carbs be (WMH-2 vs WMH-33) and do I need to go through the effort and expense to try and get WMH-33 carbs to replace them?

 

[Oldsaltydog]

If it's working like it is, I'd leave it alone. It's pretty common for the middle carb to have a different part number. It's usually because of the different linkage attachments on the middle carb.