I had this euro done by a “professional” who uses a beetle cleaning method. When I got it back in spring 2019, the skull was very white, albeit stinky. Fast forward to now and it no longer smells, but it has yellowed significantly. It is still white under the areas that he glued (no clue why he did that). Do you think I could just use some peroxide paste to rewhiten it? I definitely won’t be taking anything back to this person again. For a charge of $165 I was expecting a little better quality. This definitely wasn’t the “museum quality” he advertised.