For repairs the writing instrument should be sent in via the authorised specialist dealer, who uses a Montblanc service envelope with a unique service number; only via this number is the process traceable in the Montblanc SAP system, and enquiries can be answered competently. The direct point of contact for enquiries is the respective service centre, not the boutique — in Vienna, for example, the service centre on Kärntnerstraße. Usual processing times lie at two to three weeks. Hard-start problems on new nibs can also break in by themselves after a few writing operations. Experiences with the service vary considerably, from very accommodating handling to unanswered enquiries via the online contact form. Important is the proper stamping of the warranty booklet at purchase.