The new hubs spacing seemed to be too small for the fork that it now rubs against the disc brake mount. In the picture, I can't even squeeze it in between the mounting point and the rotor.
Looking for solutions or workarounds. Steel fork of a 20' (406) minivelo. I actually thought of installing the mount on the other side but the disc caliper would be too far offset and there doesn't seem to be a mounting adaptor for that.