Hey Will, so are the 3 dents you are talking about the 3 small white areas where there's timbermate ? Might to pay to fill these with 100% timbermate will be stronger than watered down.
Sometimes when bodies are hung up the wind blows them into a solid object, maybe this has caused the 3 small dents.
Some builders have used an iron with a damp cloth to remove dents but I don't know enough about it to give advice on that.
Since this will have solid paint I'd re-fill these areas and sand back