Your model was way too complex for me to follow.
My first effort (purple group below, polyline on the left) is not the droid you’re looking for…
The second attempt (white group, polyline on the right) uses Anemone and is better since all the segments are equal length, as I intended.
bend_polyline_2019Oct1a.gh (25.7 KB)
If your polyline input has arbitrary length segments(?), it won’t do either, but the Anemone group could be adapted rather easily by replacing the ‘Length’ slider with a list of polyline segment lengths.