I have an 89 SC w/ 152,000. The harmonic Balancer Sheared off leaving the aluminum nozzle on the end of the crankshaft. This happened at approximately 146,000 miles. I had a local shop remove the remaining nozzle as well as the bolt that was broken off in the end of the Crank. He replaced the balancer with a part form Dorman's and the bolt came directly from Ford. After 6,000 miles, the balancer sheared off a second time. Has anyone experienced this before? Is this a case of a faulty part or a symptom of a larger problem? The engine runs smoothly and doesn't seem to have any issues. Unfortunately the replacement was done almost 2 years ago and the mechanic will not warranty the work. Any ideas how to remove the nozzle from the end of the shaft?