Hi All -- does Garrett manf a 5 x 8 DD for the 1250 ? ( the GTAx series - 550 , 750 , 1250 , 1350 all use the same coils) or will the ACE 5 x 8 work ? also i noticed there is an aftermarket 5" DD manf in the Ukraine --has anyone tried one? / i presently use the the 8" solid round and the 4.5 small sniper -- both are concentric -- --- just wonder if the DD coils are better in trash -the 4.5" sniper is probably all i need --hunt neutral /low mineral ground here in North Texas -- your opinions i appreciate , thanks Rick