first of all, thanks you for the mod.
I don't know if anyone else have the same issues, but in my game, dcs is trying to apply a roughtmet causing a missing texture to be display throught the liveries.
The F16 use the laser code 1687 on the TTI server, so you need to set the TGP to 1687 to use GBU on the TTI server.
Makempay, the GBU use what ever code is set in the Mission editor and not always 1688 if changed inside the mission editor