Locking heat riser open

[fnaramore]

Hey guys, I'm locking my heat riser open to keep it from rattling but am having trouble figuring out which way is open. Both cold and with the engine warm, I spun it all the way clockwise (if you were looking at a clock in front of the car) and all the way counterclockwise and it seems to flow slightly more evenly spun all the way counterclockwise. Does anybody know by heart which way to spin it to have it open?

 

[74DartSwinger360]

Why not just remove it and weld up the hole on the manifold? or put a bolt through the holes

 

[fnaramore]

Because this is just temp. I'm changing to headers pretty soon; the rattle of the riser is just annoying me.