In a lot of four pens, a Wearever pen sold as needing repair does in fact need a new nib. Can I substitute a readily available #6 or #5 nib ? Anyone know the proper size to use or any steps needed to adapt it to the Wearever feed?
I've used Knox K26 nibs as replacement nibs for some vintage pens before. It may be close, it may fit perfectly, or it might be a total bust.
They're 26mm long and if I remember, fit a 5mm diameter feed. They come from Germany, look and write very nicely (I've only used M), and best of all -- reasonably priced.
http://www.xfountainpens.com/collections/accessories/knox