Hi Guys
I don't know if this helps, i understand what your trying to do. I to run multi monitors in a home build cockpit using the ngx i also run in full screen mode and I'm aware of this issue with re-sizing and the saving of the gauges in the new positions
what i have found out before is if you adjust the size of the gauges in full screen mode then switch back to windowed mode and save the flight. ( the gauges need to be displayed on windowed mode when saving,) The gauge sizes will save, next time you load the flight switch to full screen click on the gauge and you can drag it into position it should fit perfectly.
I understand this only solves halve the problem
i was wondering would the panel restore ini file provide the necessary information to edit the panel cfg positions or once you have saved your flight with the correctly sized gauges would that information save anywhere? if it did the panel position information could be used to edit your original panel CFG
Im just trying to help and if you get a fix for this issue let me know please