I recently spent a few hours working on my good ole' ebonite Noodlers Konrad. I hadn't used this pen for quite a while and wanted to spice things up a bit. The changes I made (and highly recommend) are as follows:
1) the "easy my flex" mod, were you grind a portion off the sides of the nib as seen in the picture.
2) I doubled the depth/width of the feed channel, which managed to eliminate almost all railroading except on very aggressive downstrokes. and
3) I reground the tip to an XXXF needlepoint. I don't know how to measure the actual degree of fineness I achieved with this grind, but ill tell you it is so sharp that I may just use it to sew some new underpants.
I don't by any means consider myself an experienced nib-alter-er-er, but it wasn't too difficult to shave the sides and smooth the tip with 8000, 12000 and 16000 grit polishing sandpaper.
Anyways, here are some pictures of my work (and first attempt calligraphy); please comment if you have any questions, suggestions or have tried the same thing during your nib-related adventures. Enjoy.