Build and Shoot

I'm making a push mode map, but the default script ignores the z coordinate for spawn locations. Defining a get_spawn_location in the txt, gets overridden by the push script. Since I don't want to force people to use a custom mode script to run my map, I was wondering whether there is some way to override a script from the txt.
Technical details about the ways scripts are applied appreciated. I know nearly nothing about JSON or Python (or the server), though.

Are you making a proper map config file for Push mode as outlined here?

Yes, I am. But the Push script I have uses map.get_z(x, y) and thus totally ignores the specified z-coordinate. It's the same script as listed there, though it might be old(?). Without the push script I succeed to set the spawn as intended.

You're looking at the updated script later in the above post? You may want to ask in that thread or pm one of the authors, for example, danhezee.