I have a 1973 Mako 19 with a 1996 115 HP 2-stroke, 4 cylinder Mercury. The boat is a bit heavy, but still rides with the scuppers about an inch out of the water (typical.) The engine is running well in terms of starting and idling, but it's a bit sluggish getting on a plain and tops out at about 22 mph @ 3200 RPM. The prop has been painted, but the last two digits are 19, so I assume I have a 19 pitch, 3-blade Quicksilver prop on. I don't know the ratio, but I am guessing 2.07. Any thoughts or recommendations on props or other things to check? Thanks!