Try some M.E.K. very carefully, or some paint remover dabbed on and let soak. Then wash that clean with the acetone again. With anything you use, you will have to block sand the grain back down again. I prefer SIG Stix-It, but you may try some yellow dye in the balsarite to see if it will mix in and tint the adhesive.
Good luck with it,
Dan McEntee