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Message: <blockquote data-quote="Wistex" data-source="post: 271797" data-attributes="member: 7046">hi guys, i have changed props a couple of times on the 15.  with the original prop the motor over-rev'd to the extent the valves floated and the motor seemed to have a rev limiter as it struggled to get on plane.  tried a higher pitch prop (sorry don't have the numbers in front of me now) and the 15 worked significantly better.  also tried a 4 blade prop and seemed to run out about the same-- better, but still not satisfactory..  the guys at the shop where i bought the 15 advised they did a comp check but did not have the numbers.  the shop owner advised he would do a comp check for me but have not gotten that done yet.as regards the different boats, i have weighed them (separated from the tow vehicle) and they weigh about the same; the 1448 with the 9.9 is 20# more per the truck scales.does anyone have an idea what it would cost to do a top end rebuild on the 15? wistex</blockquote>