Current questions and answers regarding the map editor.

You can change it if you take the file where it's defined and modify it there. But it's pointless, as the parameter is likely needed for some in-game calculations and doesn't affect the visual appearance. You need to extract the model from the game, process it in Maya, and re-import it. I haven't learned how to extract it yet, unfortunately. In general, psatkha is a master in this area (he mainly hangs out on Hugo).

Added 1 minute ago
Hold on, where did you find "skale percent"?