Looking so forward to your and Brett's updates.
Sadly, I was a victim of the folks that kept telling me my shafts were good. 3 sets of props latter; I replaced my suspect shaft and all vibrations went aweigh November 2022.
F M
Seems the cold shaft in the air (on the hill) measured real good. Apply some H P to it and it cork-screwed.
Moral,, trust nobody or nothing new or high tech. You feel a vibration, there it is..
https://www.youtube.com/watch?v=fgWLIvGZFGA