Are you sure you're only 28 years old?

While reading the thoroughness of your replies I cannot help but revel in the depth and breadth of your knowledge ... and in the fact that you are a walking-talking human "compendium" of old record player stylus information ( among so many other areas of old things and probably mummy dust too... that you have a "lock on")
You never cease to amaze me.
You do realize don't you... what an asset (read treasure) that you are to this forum?

... that's my humble opinion at least.