There is a slight height difference between the EVO CD and some earlier models of the EVO 75/150, due to the size of the rubber feet on the earlier models of EVO 75/150.
If there is a height difference between your units, you can raise your EVO 75/150 to the same height as the EVO CD, by replacing the feet on your EVO 75/150 with the supplied extra feet.
Inside the box of your EVO CD, there will be a sticker on the bag containing the feet which shows you how to replace the feet of your EVO 75/150.