Looks good, but this is a tough situation. Those impeller pieces can plug anything at anytime. I would pull off the thermostat cover (get some new gaskets) after running it on the boat a few times to see if any other chunks appear.
Thanks guys. fleetwin, where else could they be hiding? It’s a different lower unit, head water tubes are clear. I was hoping I was done chasing rubber around this motor now, but if I need to I’ll keep chasin’.