The cause typically lies in the fact that the nib was not correctly seated on the feed after the repair and the nib slit is therefore too narrow or too tight. A complaint at the dealer is the right path; an experienced specialist retailer can loosen the nib tension and remove any foreign bodies, e.g. a hair between the tines. Today many repairs have to be sent directly to Montblanc, since only few dealers from the old guard are still allowed to carry out such nib work themselves.