I've used HHA's forever and I love em "but" they seem to have a problem on Mathews bows due to the size of the scope housing - 2". Over in the "technical" section there's a post up now "sight problem" that you might want to keep an eye on. Not trying to be the grinch just want to make sure your aware of what you may find when you mount that new sight on your new Z7.

Dan