I appreciate the replies, and education, as I don’t know much about this topic.
I tested 2 Ventus Velocore shafts, one Tensei CK Pro, along with 2 Graphite Design shafts, and 4 out of 5 were consistent with expectations (stated stiffness/flex)…yes, they varied, but they were still within “range.”
And the 5-wood shaft was the only “outlier.” The other 4 shafts mentioned were driver shafts (fwiw).
So, could it have something to do with how it was trimmed?
I have one more shaft to test, hopefully tomorrow, and it’s a Ventus Velocore+, for a 3-wood. I’m more curious than anything. The cost/time isn’t significant, as the fitter has been kind enough to share his time and equipment with me.
Again, thanks to both of you for your time, and insight.