how to get 2 dimensional scaling out of "flow'

Hell0

I could use an idea.

I need to align a curve between start and endpoints in a sequence. The curve is complicated, so I want to 'project' the initial curve onto the line where it needs to be.

So, I am using "Flow", which is working for scaling along the direction of the target curve. The problem: "flow" does not scale in a direction perpendicular to the target curve.

I have tried several work around, doing 2 'flow' transforms, 1 along the target curve, 1 perpendicular to it, but I am getting strange rotation effects, due to angle of vectors of base curves.

SO, I think I must be missing something in my approach, and there is an easier way.

Any ideas how to get flow to scale in 2 directions? or, perhaps I need a different approach. and more decaf.

PS By the way, I can't tell everyone just how much fun all of this is. I been working with geometrical progressions since my first computer (an apple II), and over the years have progressed, and grasshopper/rhino is the best thing since sliced bread. better,even, especially  if you have a gluten allergy. and even better if you have a CNC milling machine in the next room, alot of end mills and a supply of aluminum blocks. Thank you Mr. Ruten,