2005 Larson Senza 186, Volvo Penta 5.0 GL-E, Volvo SX-m sterndrive. Boatin around lake hit a stump which bent one blade on the prop, we were at idle when it happened. Bought new prop and put it on, noticeable vibration from sterndrive around 1300-1500 rpms. Took the prop of cranked it up and...