"If your driver doesn't continue to produce good shots when switching between driver and irons there is a mismatch in the combination. Could be an driver shaft weigth issue."
Exactly what I have been thinking. Re-visiting Miles of Golf, trackman fitter, is not practical since they are about 1,000 miles away. I was on a business trip when that took place. About 2 years ago, I bought a 909 3 wood with a VooDoo Stiff Shaft, and a Titleist Hybrid, can't remember the model, but same Voodoo Stiff shaft for Hybrids. They just never felt consistent to me.
So last summer I attended a Titleist Demo day in Knoxville. I did this because I was asking the fitter about heavier shafts for those clubs. He didn't have them, and recommended attendance at the Demo day. It was not crowded so the Rep had plenty of time for me.
We tried the 910 F 3 wood with various shafts. The shaft that gave me the feeling of control was a UST ProForce V2 86 gram Stiff. We did the same for the 19 - 20.5 degree 910H Hybrid. He went directly to the Fujikura Motore F3 95 gram stiff. Same results. I have been happy with both of these clubs.
I have been thinking that the 63 gram shaft in the Driver is just too light for my swing motion. I would gladly give up a little yardage if I could control my Driver like my 4 iron, or Hybrid. Need to re-visit the Titleist rep, who is also a pro at a Knoxville Club.