Just a quick question: I shoot a Dankung double tubed cat left handed at nine o'clock (or gangsta style). If I'm aiming carefully I tend to group to the right. I presume this is because I'm compensating for the tension on the elastic suddenly disappearing when I release. But it's not always like that and sometimes I hit exactly what I'm aiming at without any bother. The target below was 4cm at 6 metres hit by aiming to the left when I consistently missed to the right. It happened with a can earlier. So. Is it normal to have to aim at a non target point to hit a target or can I change something so I can use my sighting point as just that?