Veems are/were the best performing on all of the Cabo's and usually around 1.5 knots faster at cruise and WOT with less vibration and no issues...
You will lose speed since you are running cruise at a percentage of load. You should be at a higher rpm at 75-80% load than 1900. The higher the...
Then leave them alone. You cruise on load percentage anyways right? So it will be faster how you're pitched at cruise.
Just have a little cup added to yours.
You really want to be at 2350 WOT with full fuel/water with MAN's. It's much better to be under propped than over.
If running a watermaker on fresh water, you are going to need to dial down your pressure and modulate the water maker based on water flow....
Those are very good speed numbers for c12's on a 40' Cabo.