Arthur I did me some testing.

I have bemans from 5-6 years ago. I found them and checked them through the spine tester. HOLY CRAP. From spining the shaft I got .011, .012, .011, .014, .011, .023, .024, .018, .24. Nothing close to that with the newer shafts. It will be amazing what we will be at in another 5 years.