I put a new prop on a 200 johnson.Never saw the spacer frozen to the old prop.The new prop drove itself into the lower unit housing egging it out and gouging out the aluminum housing.I re installed another new prop ,this time with the spacer.Now the boat will not move out from a stand still.RPM goes up but boat moves out slowly.I suspect cavitation due to the space around the prop and the lower unit housing.Am I on the right track?
