I only have X and TX shafts in my set from top to bottom so I can appreciate the challenge at finding spots that offer those shafts. My conclusion based upon other better players and my own experience is that three shafts in basically fit into this area; Aldila Tour Green 85 Hybrid X, Aldila Phenom 100 TX and Graphite Design Tour AD-I 107 in X. Basically, whenever I have been fitted at the Tour Facility in Oceanside by Titleist it always seems to come back to these three options. If you are strong enough to play X shafts then chances are one of these three will fit the job, of course, getting fitted is the best option so you may wish to consider visiting a national fitting facility such as TPI Oceanside or an advanced regional fitter. The advanced regional fitter will have access to X shafts they just may need to order some in advance.

Just a few thoughts, Hope it helps!

Just put a AD DI 105X Hybrid in my 19* and couldn't be happier. Rockets off the face with minimal dispersion. I've also got a 7X in my 3 wood and it's a beauty. Considering replacing the Oban Devo in my driver with an AD DI as well. Big fan of the AD DI line.