@Erica McPheeOh the fun is just beginning!
Uh, OK, but would that be for you or for me?

Definitely up to speed on the nib prep, thanks! Good to know about that breaking in period. Reminds me of playing oboe where reeds, even when making myself, would get better with time and play really well … until they didn’t. I think I’ve experienced this a bit with the Nikko G.
Lastly, are you using an oblique or straight holder?
Oblique, and one of your very own Curv-E’s beautifully made by uber craftsman Edward Curran! Feeling unworthy, at the moment, of such a magnificent instrument.
@Grayspoole – thank you for the IAMPETH links! Very helpful. I should add that the Curv-E is already made with that nib “cant” built-in. Which is fortunate, because I’d otherwise be sweating bullets putting pliers to it.
@Erica McPhee Are you a rightie or a leftie? Which nibs are you trying? Which are giving you the most trouble?
I’m right handed. On others’ recommendations I over-eagerly purchased about 10 each Gillot’s 404’s and Nikko G’s until recently acquiring a sample set of 12 various nibs. I honestly think I’ll need to do a lot more drills and writing before I know for sure what’s working and what isn’t, and perhaps to get past that break-in period – nibs,
and, uh, penman.
A few comments, so far:
Gillot 303 WAY too “sharp” … digs into paper on upstrokes and having trouble finessing it.
Zebra G … lots of ink flow. Almost too much. Maybe that break in needed.
Leonardt Principal – just can’t seem to control the ink flow.
Brause 361 – Holy Crow! Big Fat Fun letters! Excited to see, for the first time, the magic of shading. I may have to pull this out when feeling discouraged … or when painting a mural or something.

Hunt 22 extra fine – Too sharp problem. But need to give it more of a chance.
@InkyFingers Try stiff nibs first then gradually progress to more flexible nibs.
I currently don’t know enough about nibs to understand which are stiff/flexible. Do you have examples?
Thanks, once again, to all for your responses! I have much to learn, and am grateful for your taking time to send ideas for help.
Karl