I want to instance primitives and orient them along a curve. Since I need control over each instance, I have to use Copy SOP instead of Sweep SOP. However, once instanced, the primitives are not centered on the curve (depending on how far away a curve's CV is from the curve). So how do I make sure the instances are centered on the curve? - just like the Sweep SOP does it.

Since the copy sop copies to points, it makes sense that the circle would be copied to the CVs. To fix this, convert your NURBS curve into a poly using the Convert SOP. That'll do it!

thanks a lot.