I have a mid 80's 149 Meisterstuck that I purchased new for my father on his 60th birthday. He passed away several years ago and my step mother recently found the pen and very kindly sent it to me. My father was not at all familiar with fountain pens, and I think it's possible that he put too much pressure on the nib, although I cannot see any obvious damage. It is in overall excellent condition. I slowly and carefully cleaned it but the nib is still a problem, experiencing a great deal of skipping after a few minutes of writing quite well. I am at a point where I believe that it needs professional attention. Checking the Montblanc site only confused me. Might someone be able to suggest an option or two for restoring this beautiful pen's nib to good health? Thank you.