I am late on this one - ran across the thread waiting on my daughter trying on clothes. Thank goodness for an i-phone and Tradgang!
Bill's comment caught my eye. My favotite recurve tuned cutting 1/4" at a time(bare shaft & paper) with BH and field tips in the same holes... But, I get the same wear patterns discussed above - subtle but noticeable wear on the lower hen feather and outside of my shelf (Velcro). Stiff? Maybe, but flight is great...
I am working on a new bow cut past center and still getting a weak reaction with arrow that should be way stiff by Stu's calculator. Getting ready to add to my strike plate & see if that helps. Tuning can be fun & frustrating!