ANR Film Holder Recommendations for Epson V700 / Flatbed

I purchased a V700 about a year ago and it's been quite the process nailing down a consistent film holder setup...

Aware of the limitations of the standard holders, I was most recently intending on purchasing Better Scanning's 8x10-ANR-Glass mounting station but since learned that the website/business is dissolved. This is a shame since it seems like there is nothing comparable out there.

I'm wondering if anyone with an Epson flatbed has any recommendations for an ANR-Glass film holder with a large opening (similar to 8x10 preferred) - I'm seeking to emulate how he used the cardboard "light mask" cutouts to create smaller cropped frame edges for 35/120 negatives on the larger 8x10 tray. My eventual goal is to nail down a setup that allows me to scan rough-edge frame borders of 120/35 negatives using various cropped cardboard masks.

Something like this seems to be the closest option I can find for what I'm looking for, but the smaller size of the opening would prevent me from installing larger custom "masks" like in the betterscanning method.

Has anyone purchased or is aware of any epson 8x10 ANR setups that might be comparable?

Just now I was able to call up the betterscanning.com website and view their various products.
I have their replacement 120 carrier for my Epson V700; it is much better than the stock Epson carrier, which only has two height settings; Better Scanning's carrier height adjustment is fully adjustable. Do know that setting up the height adjustment is fussy and time consuming. The result, however, is worth the effort, the scan is sharp corner to corner.
Note that using the ANR glass strips will, for 35mm film, result in losing one frame of scanning, at least in my experience.
I called up the Better Scanning's 8x10-ANR-Glass and there it was. I doubt that a defunct business would pay to maintain a website. If the 8x10 carrier has continually adjustable height screws it should give excellent results, within the optical limitations of the V700 scanner.

Unfortunately, there are many, many, many stories in the last couple of years from people who have had no success obtaining any response to attempts to contact betterscanninn.com or Doug Fisher - the person behind the Betterscanning business. I don't think I've seen any indication that anyone has had success reaching him in years.
He was good to deal with when I dealt with him several years ago.

The web site may stay up until the last subscription payment runs out.

I've been trying to contact them for the past three months with no joy.