i have the hunter ambi dextrous model and really enjoy the workmanship gone into it,however the bands are held in place by a small piece of therand,when the band comes off and its a case of when not if getting the band to go back around the grooves is nearly impossible and frustrating to say the least, so my simple solution was to use waxed dental floss form the pound shop,its about 2mm wide and after a couple of turns hyolds that band intight..real tight and its easy and quick to replace.
just really getting into cattys though,going to buy a cheap barnett copy from ebay for plinking too