I actually just went from the 909D2 w/ Proforce V2 76 X-stiff to the 910D3 w/ the Project X 7C3 Stiff flex.  I was a little concerned going with more torque and hitting left shots but that hasn't been an issue.  I absolutely love the feel and responsiveness…

If you all ready have custom irons you should know the specs. Any authorized Titlest dealer can order anything you would like. I did this with my 58 - 08 BV wedge. Mine is + 1/2" shaft, 1 degree upright, R200 TT shaft. I got a 52 - 08 BV wedge as a Christmas…