Ok in this way I made a standard ISO 105 with the GH80-3000 replica REV.2. If you make exactly the same wiring you can use the JSON file I made on kbfirmware.com and with that programming the layout you'll prefer on your keyboard.
-ISO enter: NO diode on D73 and wire it on D91 (IMG1)
-key on the left of ISO enter "]" (S51 on matrix): NO diode on D51 and wire it on D30.
-Number 3 of the keypad (S95 on matrix): NO diode on D95 and wire it on D117.
In this way I resolve the conflict I've found... It's the simple way I've found to resolve. I'm a Newby, an industrial mechanic not an electronic expert so I don't know if it's the best way, but it finally works.
IMG5 shows the project error of position of the hole for the key on the right of the iso 6.25 spacebar. (position S104).
As I say in the Future I'll hope to make a PURE ISO 105 that can work without wiring the conflict keys and solving the problem of position of the slots I found.
For the led ther's only one connection to the AT-mega I don't know how to command 3 led with only one connection, someone that are better than me can check the project on
https://oshwlab.com/farmakon/GH80_3000-4f3cee521afd4be3858c4b5cc3b76f9e and share something about? thanks.
All the Best, Alessio Vescovo - Vescovo Restauri.