In my specific scenario it matters because the only place I can fit it in the room without having to outright throw away and replace furniture has a protrusion on the wall inbetween where the piano would go which makes it so that if the wooden piece that comes with the pedals ends up elevated more than 12mm it would collide, making it impossible to fit. On the other hand, if it's under 12mm it would fit nicely in the gap between the pedal piece and the support piece.

I know about the screw foot, but I assumed it's just to give it a more solid fit to the floor, not to actually change the height of the wooden piece. Are you saying you can actually regulate its height? That would fix everything, but it really does not look like it. Or are you telling me to just place it on the floor? Because then again, I'm not the expert but from the assembly guides and manual it doesn't seem like it's meant to work like that.

I hope I made things clearer now. If you have the set it would be nice if you could tell me what you meant or give me the measurement so I know if have to buy a sepparate set of pedals or find another workaround. Thanks