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Pinklather makes some valid comments there & any solution for that razor is a compromise.
I imagine there may be some extra spine wear incurred after the repair & rehone but ces't la vie.

Actually it could look like this.
Rather than just swooping the edge. My preference would be to come in from the tang & shorten the edge length.
It's a big job but check out the work of some of...

Just confirming Rezdog's reply. This razor most likely had heel damage & was badly honed to compensate.

Bezutifully restored but poorly honed unless the 'frown' at the heel has been corrected.
Easily the cause of your problems.