Big Clock Hand

I've got a project where the user can drag the big hand of a clock around. Got this working fine. But....

I'm trying every tick to change the angle of the hour hand by linking it to the minute hand, but when I do, it thinks "12 o'clock" is at the 3 mark. I think this is because zero angle for a sprite is to the right and not up. How can I change this?

Just set the variable to Variable - 3 hours

I'm doing something similar, but I can't get it to work. It's difficult to explain so here's a capx. It requires beta 130. Just drag the big hand and you'll see the variable change in the text. Thanks.

Clock Hands