I'm actually trying to move my install to a clear case and can't find my 3d printed block anywhere. I emailed Dan last night shortly before responding to you with the same question. I'll let you know what I hear.
I have done two installs in the past. The first kit came with one but the second one did not. I used the "Contact Us" part of the website to get one that time since my order was missing it. I would reach out to Dan using the "Contact Us" form to see if he can send you one.