Ink above the nib between tip and breathing hole as well as untidy start-up mostly indicate that the nib after the change is not correctly seated. A second free exchange is generally not granted by Montblanc, so a renewed processing is sensible. Recommended is to pack the writing instrument shock-resistantly in bubble wrap and cardboard and to send with a covering letter directly to the Customer Service of Montblanc Simplo GmbH in Hamburg.