Funny enough Hector, I already have 3 of the 4 that I need and as the X99 Gigabyte boards are really hard to get, I opted for another Chinese board that seems to be OK, decent BIOS and enough accessories to be viable. Its testing up OK at the moment so I may have a reliable number 4.
I took the OS drive off the Atermiter board and used it to start the new one. Copied it to the NVME SSD and did not have to re-install anything in the OS.
The Atermiter board has been retired even though it works OK and I have retired a i7 4770k board which also worked well and I have 4 X99 socket 2011-3 boards that are now all working correctly. I might add that you get really tired of building hardware and configuring operating systems.
PS : 2 in one room, 2 in another.

As an aside, even though I liked the PotPlayer for 4k video, the recent version have this random popup which rendered it close to useless so I hunted around and found Media Player Classic Black Edition and it was easy enough to configure it and the display quality is very good.