As far as I remember the ZR limbs on the Reflex bows use the same width spacers and have the same general "space" between cam & limb.

Was the string ordered for a Cam and half bow, or was it just a "generic" Winners Choice string in the appropiate length sitting on a dealer shelf?

For certain bow models/companies they do build appopriate loop sizes just to combat these and other problems associated with with incorrect loop size.