FWIW, I posted some DC-Fix beam shots recently too. I compared a normal ZL SC52 to a diffused one, though, not a C8. The pics are in posts #15 and #18.
I’m pretty happy with the result.
I also use DC-Fix on one of my CNQG brass lights and on a Convoy S3, and am delighted with the new beam pattern. Perhaps I’ll remember to get beam shots for one or both of those…