The spring has to be wound up to be centered in the steering wheel straight ahead position, if not then it will break very quick when one side runs out of ribbon before steering wheel hits the end of its' travel. Literally yanks the end out. I have also made them last longer by modifying the out lead to change its' curvature to allow for more travel before it gets pulled on, any excess moving of the ribbon is what breaks them, they only take so much flexing before the copper inside cracks. Flexing at the very ends is absolute death to them.