I had just about given up when Andy Hayes (see here)offered me a hood-feed-collector-nib unit which he apparently had going spare. Well, I'm totally endebted to him, as it turned out to be a relief nib when it arrived! It's great fun, and wonderful to use. Thanks again, Andy!
Now, the horribly distorted nib went into my spare parts drawer, and I thought of it yesterday when I was wishing I had a nicer nib for the very special thing which is my 1949 Parker 51 Flighter. The nib was a fairly boring fine, with some scratchiness and skipping.
Richard (richardandtracy) mentioned once that it's possible to convert a 61 nib to fit a 51 feed/collector - and I did just that! I filed off the locator tab on the top, and used needle pliers to reshape the wings to fit the 51 feed. I had a hell of a job straightening it (in every plane).
So, now I have a special 61 nib in a lovely 51, and a very cool relief nib in a special 61.

The 61 nib/51 flighter is a flexible medium (see photo)
The relief on the 61 makes it a cross between medium/broad.


PS: And here's one of my dog, too:
