File,
Just a suggestion to mount the block.
A bit off focus but I guess you can see it.
Just to have an idea of the size of the block.
I used a metal tape that is commonly used to wrap big boxes. It's very resistant and also somewhat flexible. The difficult part is to measure it correctly. Once you get it right just insulate it with tape, as I did, and the block will be securely in place. My block is sitting very nicely as in the picture for more than a month with no problems.
Good luck.
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TaTs