Maybe I missed something in the above posts but unless that scope is drastically different than the aluminum 127mm FCD100 triplet your lens hood (dew shield) is broken. I don't think they would have put the same big hood on only to have it stop part way. Its supposed to extend until the black ring at the back of it hits the ring at the end of the tube which gives it a good 6" or so extension, basically the full length of the lens hood (or at least the entire ES logo) should stick out past the end of the tube. It should come to a hard stop when the two rings smack into each other. Maybe those screws they use on the carbon fiber version are catching or something.
This is confirmed by ES. The hood only has 3" extend-out. It is a bummer..