Do you have a puller? I would pull the impeller and just give it a real close inspection. The entering side is where the water enters the impeller and the leading edges are very delicate.
GT
yeah I've got boxes of cartridge rolls I use to do a lot of cylinder head work, the leading edge most definitely needs to be cleaned up the rocks ate the edge up pretty good, I was most worried about the vibration so I hope that's gone.
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