So did you use the CX-Ray on the front and Race on the rear, how come? - price, aero?
Usual form is CX-Rays on the front and rear non-drive side, and Race on the rear drive side. Using a thicker spoke on the drive side, which has a very low bracing angle, is done to balance the axial stiffness of the wheel. I don't think its actually necessary on 32 spoke wheels, and for low spoke counts using more spokes on the drive side is a better solution, e.g. 24 spoke rears with 16 dive side spokes and 8 non-drive side.
Usual form is CX-Rays on the front and rear non-drive side, and Race on the rear drive side. Using a thicker spoke on the drive side, which has a very low bracing angle, is done to balance the axial stiffness of the wheel. I don't think its actually necessary on 32 spoke wheels, and for low spoke counts using more spokes on the drive side is a better solution, e.g. 24 spoke rears with 16 dive side spokes and 8 non-drive side.