I'm the proud, new owner of 1963 M20C, N6578U since yesterday. The prop is of the older Hartzell "non-suffix" hub with the 100 hr recurring AD for an eddy current inspection. During the pre-purchase survey earlier this week at Advanced Aircraft Services, I had expressed interest in having the prop overhauled if I bought the airplane. AAS' neighbors at Western Aircraft Propeller alerted me to a recent Aug 27, 2012 update to Hartzell service bulletin HC-SB-61-269 "Propeller - Hub Inspe