Boat seems to be missing 10 mph and 700 rpm

[Striper80]

It's the original prop to the boat. Atlantic propeller in Edison did the work. I didn't really pay attention to how it was before I had it done. I ran the boat only twice before I had the prop done. The PO actually hit something that knocked the tab off the lower and put a small nick in the prop. The lower was under warranty and I sent the prop out.