I had a handyman restain my front door. He did a light sanding of the entire door but heavily sanded a few areas that he said needed it. After he put the new stain and clear coat on the entire door I noticed the areas he heavily sanded were much lighter than the rest of the door. I asked him about it and he said after 2-4 weeks those spots will darken up and match the rest of the door. Is this right? It doesn’t sound right to me but I’m not a handyman.