[htm475]

Thank you JFP in PA for your input. I was able to contact my mechanic and he guided me through a crude / simple way to back flush the system. I retreived about 60% of the impeller in three large chuncks (found behind the thermostate) and the remaining in a grindings pile about 3/8" in dia. Short of taking the entire system apart I think this is the best I will see. Hopefully any remaining parts will be small enough not to block flow or return to the pump and take out the new one!!

Thanks again to all that responded!