Hi @LelandCurtis,
Are you looking for this? scale.gh (5.3 KB)
If yes, then I did this like so
import Rhino as rc
center = poly.CenterPoint()
curve = curve.ToNurbsCurve()
new_curve = curve.Duplicate()
xform = rc.Geometry.Transform.Scale(center, scale)
new_curve.Transform(xform)
a = new_curve