A frequent cause is a nib width unsuitable for the writing posture or a very upright writing posture on the fine Greta Garbo pen. Collectors advise giving the pen a few days break-in time and working on the writing posture. If the problem persists, going to the specialist dealer or to Montblanc is worthwhile; a free nib swap is only possible within 14 days of purchase, afterwards subject to charge. In the concrete case the problem was fixed by nib swap and a more upright writing style.