Here we go again. New adapters that don't work with the shafts we have for the 910 series. AND still Titleist won't sell us the adapters. Who is in control of my golf clubs anyway? I put genuine Mitsu's, Graphite Designs, etc in my clubs, not the made for Titleist, watered down ones. I have 4 910 hybrids with two different sets of shafts. What a nightmare if I want to upgrade. In this case it is just not my hassle, but it is costing them sales.