Anyone know where I can get replacement ribbon for a Blick Universal/Klein Adler? Because of the horizontal striking action, and being a three-bank, the type-head depth calls for a 3/4" ribbon. Is this unique to this machine? Was 3/4" the Betamax of Golden Age Saxony? I re-inked this ribbon with a tube of ballpoint ink with some success - but it is perforated and becoming thread-bare.