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In fact very few are straight :p
I'm honing a W&B right now that has the same warp as yours. Not uncommon at all.

That gap is not abnormal. You just need to adjust your stroke to rock or roll into contact.
You cannot hone a worn smiling wedge with a flat stroke.

Don't remove the smile. The razor was made that way.
For a restored wedge, I think you have a very even edge bevel. Just try to refine what you already have.
The gap in the 2nd pic is simply the...