I manually inserted the points and edited their location.
Also added and hooked them up in the AnimateThreadSpline function.
They move fine, also with the suspension.
As you can see… I just need to edit a couple of tangents… but I have no clue where to do that.
Also need to increase the number of Threads along the spline… also have no clue where to do that 
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Wait… I found the Spline Tangents array