Don, ... noticed that no one has replied yet so I'll take the leap. I tinkered with a similar problem and had some assistance with making corrections (using a launch monitor). Would love to read later what your fitter does to help you out. My guess is that a 36-42 degree descent is probably on the steep side -- maybe causing extra backspin on the ball (less carry if ball speed is a constant). A strike point on the lower part of the face (hitting up) is better for me than a strike point on the top part (if I didn't hit center) - helps me to reduce the ballooning and better roll-out.

I swing a 9 degree driver head but my launch angle was reading 13.5 -- adding on average 4.5 degrees of dynamic loft even though my strike point was mostly around the center of the face. In reality my shots never really rolled out as far as the launch monitor generously estimated. But I was always told to add 1 - 2 degrees of dynamic loft to whatever the number on the driver was. After making some corrections, good numbers for me with same 9 degree driver head: launch angle 10.5 - 10.8 degrees; descent angle averages 36; avg ball height peaks 87-101 ft, carry averages 253 with typical ball speed around 146 mph. Most drives roll out to 265-270. ... can whip the club at 150+ mph but I hate hitting into someone else's fairway. =)

Thanks. The descent angles and ball height are very similar (end of comparative results). My fitter uses a Trackman indoors so I'll need to schedule an hour to determine dynamic launch, launch angle, and see if the height and descent are optimal for my slower speed. And see if which Pro-V or AVX work best with my swing. Even the heated ranges lose value now that wind and below freezing temps are here for the winter.