"The handle is quality, I'd like to preserve it. Modifying the underside will require removing the head, however. Never done that. It has a circular metal wedge in addition to the usual wooden wedge."
I think you'll have a tough time removing that circular wedge and saving the haft. If your successful, please let us know how you accomplished it.
My regards, Double Ott
Double Ott aka; Tom; TC
WTB; Vintage PUMAs from the 1970's & 1980's. Collecting vintage PUMA Folders & Lockbacks. Let me know what you have, Thanks