Sorry if I didn't word that clearly.
There's an Excel spreadsheet that has trig formulas to calculate the honing angles with different layers of tape based on measurements of the spine, blade, and tape thickness. https://sharprazorpalace.com/advance...pers-tape.html
I don't hold to the results rigorously. With my limited experience I've found it helpful to get a starting point, then I see what the bevel looks like, and go from there. I also like the spreadsheet to keep a record of what I used for a particular razor.
There doesn't seem to be much spine wear. The green arrows are where the edge of the tape was.
Attachment 314357
Sounds like cutting the tape width down is how I need to proceed. If that doesn't work I'll drop to 2 layers and see what I get.
Thanks for the advice, I feel better now that I have direction to a solution.