Oh, I know it's impossible to remove him, which is what I was saying before. It's an incredibly difficult continuity to fix. I'm on your side with it, I just think I would've left it, as it's not a major problem, and I don't think changing R2 to another droid works because of his position in the frame.

The actor that played Dr Evazen was English and not tanned so the hand shouldn't be a tanned hand either.

Well, the actor is English, but the character lives on Tatooine. Although, if his face isn't tanned, why would his hand be?