Hmmm ..boot polish........ "There's a hole in the bucket dear Liza dear Liza..."
Good call on the soapsuds and steel wool. Being non invasive I might give that a try first- thanks.
The wood is almost white and could take (gasp) some stain without getting too dark. Where it's going it doesn't need to be kosher- just look reasonable.
It's the top one in the stack, The worst of the burn is just forward of the mag well on the other side.