Ahhh I see, thats what kind of threw me off, because that boat is supposed to come with a 21 pitch prop, didn't know you trashed the other one.
As you also found out with a 19 pitch prop you are going to be bouncing off rev limiter quite often at WOT, hence why they come with a 21, but from the looks of it your don't do that often anyway.
If you really wanted to bling out your drive, get a twin screw setup, I bet you already researched that though huh?
