I own a Yamaha DSP-A5 with a Wharfedale 750S dvd player. When i play Region 1 DTS dvd`s every now and again the sound goes off for a fraction of a second. This doesn`t happen when i play region 2 disks in DTS, Or if i play region 1`s in 5.1. Does anyone know how to cure this problem. Is it anything to do with the Hack i`m using(1111 then the region....1,2,3,etc) Is there another hack to try? Any help would be very much appreciated!!!!! Thanks in advance!!