Off the top of my head PX 6.0 come out at 6.5 whist S400s are 5.8. I go same shaft - ctaper x which is 7.3 and there is no issues

Steven, 

The made for Titleist shafts are made to a certain specification, so they perform to a high standard in our 910 metal woods.  It ins't an inferior product, but just plays slightly weaker to flex then the after market versions.  There are many…

3-60°, 4- 61°, 5- 62°, 6- 62.5°, 7- 63°, 8- 63.5°, 9- 64°, PW- 64°

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Thanks for the answer. The reason is that sometimes (on my bad driver day) I would use my 3-wood as my driver.. But to be honest, the 910 FD (13.5) off the deck is challenging..so difficult to be consistent. Hence making it 15 degrees at times..