How do I stop fallen empires starting with ALL tech (namely techs modded into the game)

I have a little bit of a problem.

Fallen empires spawn in the game with EVERY technology, including technologies that are modded in.

In my case, fallen empires aren't meant to have these technologies that I have modded in as they are ship types, and since fallen empires dont have the GFX culture for the ship types, they are spawning ships that have x,y,z error boxes.

Does anyone know a way to stop fallen empires spawning with every technology? I still want them to start with most technologies, but not every single one.