The Search function does not seem to be working for me. I was trying to call up a previous thread on the same topic. I'm pretty sure Matt/PA said that there was not enough cable slide travel on the Guardian to make the current MZE work on the bow. I could be wrong, but that is what I remember. On ArcheryTalk, they are singing the praises of the Vaportrail Limbdriver for the Guardian. Hope that is correct info and helps.