Casper healing?

I've been working with Casper recently, trying to see if the blinking thing was just a fluke. He's doing it again, he's done it a couple of times now. Now if I could just get him to groom more, lol, but not sure how to encourage that. I figure if I keep interacting with him with cat signals maybe it'll help his interactions with the other cats. I'm a lot more forgiving than the other cats are if he misinterprets social cues and the like. I don't know what else to do that might help. I guess we'll just keep going this way and see. I don't see how it could hurt.