Neo 2T disc brake caliper rubbing


I got a Neo 2T and using it with a Cube bike. The bike has disc brakes and the caliper is rubbing against the Neo's black enclosure.

Some write that they use spacers on the axle, but I would be reluctant to do that, since with the 142 mm through axle adapters the width of the rear fork is a given as far as I know.

My only solution for now was to loosen the caliper's two bolts. That way the whole caliper can slide to the outter side of the frame a bit. Not ideal, cos when I put the wheel back, I have to re-set the caliper to the brake rotor every time...