Yeah, I had to replace the prop hub when I replaced the prop seal. The hub was cracked badly at the keyway. I was told that the cracking was due to overtightening the hub onto the tapered shaft. I don't see why this would be Coupe specific instead of Continental specific. I got a good-as-new one from the guy in SC who parts out Coupers - don't recall his name, but he advertises in trade-a-plane, which is how I found him originally.
Joe B N86991 s/n 164
