Wow, that's amazing then! I had a huge improvement in my game when I finally bought a decent set of clubs instead of using the 30 year old clubs I got at the thrift store. Before then I always figured the clubs were more of a status symbol, thinking they'd all more or less perform the same. I was blown away with the difference it made in my control.
What exactly did you have done custom? Just custom stiffness handles, cut to length, or what?