SAVE THE LUA FILES TO YOUR SAVE GAMES FOLDER.

USUALLY FOUND HERE:

C:\Users\xxx\saved games\DCS.openbeta\Config\Input\F-15E\joystick


a note about the doggle on the Virpil stick:

I used virpil's configuration tool and set that axis as buttons.  There is a video by "Jon's Gaming and tech"  that was a big help:

https://youtu.be/28i31EbU32g