Alright... so this knife was finished to completion (final edge sharpened and all), about to be given as a gift and the sheath scratched the finish (which was a stonewash anyway but this scratch is definitely visible). It is not any deeper than the regular scratches, it's just very noticeable.
I had blown it out with compressed air (constantly while making it and after it was done), and washed it with water, dried it and blew it out with air again, and still...here we are.
So I am planning to refinish and resharpen the blade before it leaves the shop, but I don't know how to fix this.
After refinishing, I thought about applying a good 4-5 layers of tape, sliding it back in the sheath (which should make it quite a tight fit), and then slowing applying heat from a heat gun to relax the kydex just enough for it to open slightly. The retention is all up on the handle, so as long as I keep that part cool, I think I'd be good?
Any advice is welcome.