Thank you all. My intention has been to display this and get it out of my dark safe. I do have a collection of sword and firearms, but Japanese blades take a reverent and long earned devotion to understand, from what I have been able to read.
I was told by a gentleman named Robert on a sword forum that is no longer operating that my Hizen character is correct for 4th generation Tadayoshi signature due to the lack of "Saku and presence of "(No)-Kuni".
Ref:
肥 前 国 住 八 忠 吉
Hizen, No-Kuni, Ju, Omi, Nin, Tada, Yoshi
Still does not change the the poor kissaki and that I have no clue how to fit anything to accommodate the nakago-ana spacing.
A few last pics, in case anyone has any ideas how to shim this. The small broken cast tsuba is what was on the blade when I found it.
Thank you all for your time, your help, and your patience. I usually just read!
Michael.