They're not white enough?!?! Well that's as white as you can get. I'm glad you didn't listen to all of us trying to talk you out of this shade. You would have been very unhappy, especially when you would have had to have them remade. Now, you've got what you've got. You can't make them whiter.
If using Emax/LD, using wrong ingot and seeing to much translucency which = grey. Same can happen using zirconia if to translucent and or stump shade is dark. Stump shade will effect shades and definitely use uncolored frame with BL1.