I would suggest he check for clearance issues with foot powder or lipstick or something.. if everything's great, then super...

I just know Len in Maryland, who's been a huge fan of the MZE in the past -- and who has probably installed more MZEs than the rest of us combined -- has been having challenges getting them intalled on the Guardian, and has went to the Limbdriver as his rest of choice for that bow. As I said, even Muzzy itself is working on a different rest for that particular bow, so I'd just tell your buddy to watch it carefully.

The general consensus as of now is the Limbdriver is the best rest for that bow in particular, and is a good alternative for those having challenges with the extremely parallel design of some of the more modern bows. I myself haven't hada problem installing the MZEsonmy personalAllegiances and Tributes, and am getting great clearance.