i have a 10 target dvd duplicator that duplicates slower then it used too! by slower i mean about 25 to 30 minutes compared to 10 to 15 minutes! I'm using the same 16x dvds as before and burn speed is set at 12x. over the two years i used it it has slowed down! i now have put the burn speed at 16x but had no improvement! it doesn't matter if its one target or any more up to ten targets! my question is what could be the reason for this? could it be the source dvd drive? any or all burner drives? or duplicator controller?