Hello. I'm trying to space a number of features along a series of arcs in a 3d sketch.

It's similar to the setup of curve-driven chain components, but more arcs and in 3D.

I've been successful in patterning along a spline fit to the arcs I've drawn, but not in aligning the features I'm trying to create appropriately.

'bout ready to just do it 'by hand'. Thought I'd share the project file and see if anyone can see an obvious mistake I've made.