Yes, yes, YES.
I definitely learned my lesson about this recently when customer sent me a kit. It had been stripped, but there was paint remaining, mostly on hands, in between fingers and all around toes. There were also cracks around the eye sockets where someone had obviously attempted to insert eyes from the front.
I was furious. It should not be up to me to scrub old paint off of a kit (some never did come off) when I don’t strip my own kits that I mess up. But I had to because I did not want my name attached to a doll with dirty looking hands and feet. In hindsight, I should have just sent it back because it was not worth the aggravation.
I now only accept kits from repeat customers.