After playing these outdoors for three rounds, I am afraid, but not sure, they may be too stiff. My elbow is not healed so my swing is not what it should be. He's what I do know: like the lighter shafts and can live with the lighter swing weights but would be OK if the SW was a little higher too.
Spoke with Aerotech technical support today (try that with most golf shaft suppliers). Told my tale of woe and how I have not been properly fitted because of my bum elbow, but how I think my shafts might be too stiff. I asked what would happen if I soft stepped them but left the shafts at current lengths. IOW, just put the 5-iron shaft, as is, into the 6-iron. They would play 1/2" over standard (I'm more than good with that). I asked what I might expect any softening of the shafts from the soft step and added 1/2" length.
He said I could expect both added length and soft stepping to soften the feel of them a little -- like most other shafts. But, he indicated that I might not even be able to tell. He said that he is a "good player" (I'm guessing if you work in the biz and make that claim, you really are) and that he could not tell the difference when he soft stepped his Aerotechs.
Still, he agreed that it is worth the effort before I decide that I really need regular flex shafts. Before I buy a shaft for the 5-iron, I'll see how these feel. Until then, I'll use a 5-irom with my old PX 5.0 flighted shaft.