Magura HS33 is my favorite rim brake now.. this is their latest upgraded model
HS33 R*| MAGURA
I have trekking bars on that bike , so the brake lever is perfect there.
the issue the mechanics may have noted the brake boss spread is too narrow on the fork and rear stay ..
for the wide rim you chose..
As that data was not shared , so I have no Idea of what that is ..