I cant take the scales off. I dont have the material or know how. So, there is no quick fix i guess.
OK here's a couple options.
First and smartest return to Bark River. I can't imagine anywhere in the US you would need Fed EX to ship.
Second you could try to use superglue to fill the hole. I have heard there is some sort of super thin epoxy you can also use to fill holes like that. You could put the paper in the crack put some glue on the paper and try to pull the paper out and use the vacuum to suck glue in.
Third you could heat the knife handle using a heat gun or wrapping it and putting it in boiling water. This will cause the epoxy to release. Then very carefully you can knock the pins out of the handle and remove the scales.
Then you take the scales and on a very flat surface put some fine grit sandpaper down and use it to "plane" the scales flat. You have to be careful not to take too much off, or if you take too much off might want to use a thin liner.
Anyway when you get the scales flat you can just buy some cheap C clamps and glue it back on.
It's not a big thing.
RE: Dissing Bark River. I have had several knives back to them and got them fixed no problem. Also I have had the problem you describe a number of times on expensive custom knives where I would have thought the maker would have taken more time.
I have only had the problem happen on 1 handle I put on and it was some elm that for sure twisted AFTER I put it on because the scales fit PERFECT when I put them on. They got huge gaps and I actually had to buy some super thick liner material because I had to take so much off to get them flat that the scales were slightly smaller than the tang.
It's entirely possible that the burl on yours was a little wet or dry and gapped off after putting on. Also possible they ground the handle too hot and had the glue release.