I have an older Leupold VX-ii 4-12×50 AO that I am putting on my wife's gun for her to start practicing with. It has the coin slot adjustable turrets. I am wanting to get finger adjustable turrets put on it so she can practice dialing for the elevation. I called leupold custom shop and they said they could only do the elevation turret and quoted me $250 to do it. So I started looking into other options. I have found stoney point target knobs which are no longer made and Kenton Industries that make a screw on unit for them. Has anyone ever had any experience with either unit from stone point or Kenton Industries? Is so what is your experience with them? Also has anyone sent one of these scopes in to the Leupold custom shop to have this done and what did they charge?