If I am visualising what you are saying correctly, I'm not sure it really matters too much. Sham is right: old blades, wedges in particular, come with all types of wacky geometries whether by (lack of) design or through the slow time-drip of idiosyncratic honing.

If you tape, I would not try to compensate for the geometry. Where I would "compensate", and that is not really the correct word here, is on the hone itself. You need to make sure each side of the bevel hits the hone, and that could mean rolling x-strokes, for example. You might get some benefit from a narrower hone - never worked any better for me, but I know some people find benefit in them. This is a pragmatic approach - to get the edge shave ready regardless of any lack of bevel symmetry. It can be done if you are careful.

However, if you don't like that idea, or feel it is so out of whack that you cannot possibly get the edge shave ready, I would suggest sending the razor to someone who knows how to deal with the issue. They will be able to perhaps hone the spine into something more symmetric, fix up the overall geometry, and make it into something easier for you to hone into the future.

Good luck with whatever you decide to do.

James.