Bad news from Zalman.
"Dear Valued Customer,
We would like to first thank you for your interest in our CNPS9500 LED.
After inspecting your motherboard, we were able to find out that you were right regarding the interference with the backplate.
The CNPS9500 LED cannot be effectively installed on your motherboard.
We hope you find a great alternative cooling solution to your motherboard.
Geez - I buy the one mobo this hs/fan cannot mount to out of the box. I can cut it and easily make it work, just asking if anyone has done it differently without cutting the backplate.