DCB
Well-known member
The Mizuno DNA thingy uses more than swing speed to judge flex, so presumably you have a smooth tempo which would tend to point you to the softer shaft.
Just been through the process myself recently and the recommended shafts were lighter and softer than I'd have said I should have been playing. The results of trials with these shafts showed the recommendations were correct.
It's a real blow for morale when technology says you're past it