Thanks for the comments, both this and last post.
I understand your "squeeze play" explanation. Will have to watch what happens with July Cn as we go forward. There is nearly 2 weeks between FND and LTD, so will be curious !!!!
I should probably add Cu to the list and follow what happens to each as we go forward.
One thought that I had was that as "the squeeze" exhausts itself (likely driving up Dec. at the moment) and I guess Cu as well, that they may drop back once the Cn contract approaches the end and all of the buying that has to be done to cover Cn shorts winds down. (Barring other events that will impact price further/independently.)
You can clearly see that I am no "expert" on this and learned quite a bit in this exchange.
For that I certainly thank you !!!!