Doepfer

> On this exact point: is it possible to remove the rails from the low cost
> cases so that this strip can be replaced with nuts?

Yes. Simply remove the screws on the left and right side of the case. Then
the rail is loose and can be removed.

P.S. The first low cost cases were equipped with nuts instead of the
threaded inserts. But most of the customers complained that they would
prefer threaded inserts !

Best wishes
Dieter Doepfer