Well, I had a post all typed out about the 509 cam..... and poof..... it disappeared before I could enter it.
I’m not typing it out again and the new shorter version is.......

It’s not a 509 cam after all...... looks like it’s a 484 cam.

Lobe lift varies about .006”, even when measured in areas of the lobe with zero wear.

The wear pattern doesn’t go all the way across of the nose of the lobe.

I checked several lobes for taper...... they’re right about .0015”.