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    Prop replacement after hitting a rock results in low RPM?

    We hit a rock with the prop of our Mercury 135 HP outboard. The numbers on the prop said 19 pitch. We bought a 14.5 x 19 pitch and it matches the old Prop exactly. The engine used to run WOT at ~5000 RPM and now the boat won't plane and the RPM won't go above 3000 RPM. We checked that the shaft...
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