I absolutely love the Rogue Sub Zero 3 wood with the project X HZRDUS yellow stiff shaft. I puchased it after taking it out once on the course for a demo. It is easy to hit and provides the proper ball flight that I am looking for. So I decided to demo the Rogue Sub Zero Driver with the same shaft. I currently play a Taylormade SLDR driver with the loft at 7.5 degree with a Fubuki extra stiff shaft. So I am familiar with low spinning drivers. My problem was that the golf course demo only had a stiff shaft. I absolutely couldn't hit the Rogue at all. I am a 0.9 handicap. I usually can time up any club to where I can at least hit it so so. I could not feel the club head at all and every shot was a lazy skunky pull draw that sounded terrible. I couldn't tell where I was hitting it on the face. I was hitting my driver first then hitting the demo after my playing partners hit. I was hitting my driver really well. So there is no fitter near me that has all the shafts availble to demo. What should I do? suggestiojns? I was pretty excited about new drivers since mine is 6 years old but now I think they may be to light for me. Oh, The only reason I am looking for a new driver is I feel mine is not very forgiving. I figured since my driver is so old that new drivers will be just as long and more forgiving.
@Justin74 the hazdrus shaft for the rogue is the heavier offering for that clubhead. to the point the standard shaft is an "X" flex and 80g.
1) if you are hitting an "X" flex shaft now and hitting it well I would stay with that in the flex for the driver. it is heavier and the feel should be better.
2) Compare the lengths of the clubs, If you are hitting an SLDR and it is proper in length there could be a difference making for the different ball flight.
Had to chuckle, SLDR "not very forgiving". That's SLDR in a nutshell horrible forgiveness but a "beta" test on the ultra low spin driver head. Plus you're playing it a 7.5* which knowing that driver is basically unheard of (I'm guessing you naturally hit down with a negative angle of attack on the driver to generate more spin?).
On topic: Shafts are everything and the same brand/model can feel totally different in a different flex. Also, you can't presume that a shaft that feels great in a 3 wood will play the same in a driver. The much different head weights load/release the shaft completely different. For example: I tested a GD AD DI 7x for a driver and found it way to loose in the tip, I couldn't control the release unless I tried to time it up. I gave up on that shaft but one day I had it butt trimmed and stuck in a 3 wood and for me and it plays absolutely perfect with none of the tip wiggly feeling. Same deal as you have, just because the HZRDUS yellow stiff works in the 3 wood, don't presume that the same shaft will perform/feel identically in a driver.
Honestly, if you love the Fubuki just get an extra one of those and throw a optifit hosel on it (you could probably ebay a second hand shaft for around $100). If you find a shaft that you love (and can stipe the fairway with every time) buy a couple and future proof yourself. If you don't absolutely love the Fubuki, well, good luck! Finding the perfect shaft is like a golden needle in an entire field of hay stacks. Companies like Club Champion try to have a large selection of shafts to fit, but even they don't carry everything to try. If there's nothing like that in your area, sorry I'm not sure what advice to really give you (you probably don't want fitting advice over the Internet )
Maybe you should call Callaway and talk to them about this weighting/shaft issue and see what they say, then if you like what you hear you could order a custom one try it out. I am not sure what their return policy on customs so you should ask upfront in case you need or want to return it.