About 10 years ago the 2D34C53 hub on my McCauley prop developed a leak due to a crack. I located an acceptable used hub in Texas, checked with, and had it sent to the prop shop I know. The tech there did it all correctly, fit my blades, balanced it, did the modifications etc., etc. I noticed the difference of the dowel clock position, but was assured by phone it was okay, even recommended for the aircraft. That tech is no longer available for comment.
Upshot is that after flying it for 10 years and appreciating its function and relative immunity to prop AD's, there is a question in paperwork as to whether that hub should be on my M20C at all. Anyone out there have a McCauley B2D34C53-hub on their M20C or M20D that can help familiarize me with the appropriate paperwork? I am getting mixed answers from my immediate neighbors (who own neither).