I just bought a mud buddy
24hp Honda long tail. Seems I have some issues with it. When not under load runs fine. Under load it only runs about 1850 rpm when it's wide open 1790 at idle. I took the carb off tonight and checked it out looked to be fine. Checked the fuel solenoid on the bottom of the fuel bowl.. It looked a little dirty so I cleaned put it all back together and still the same issue. Tried it with one and two people with no change. Anyone got any ideas on this? Revs upand hits governor but in water or mud 1 person or two only seems like quarter of power. Plugs new. Tried old ones same thing!

The gas is new.

Motor is a 2003 with 80hrs

What's your rpms wot out of the water?