*Update* Completely died immediately after closing the return window. I was able to fix the rattling by tightening things that shouldn't have been loosened and for a short time everything worked fine and then whoops! The brake just stopped working. *End of update* Everything worked fine at first, but suddenly it became VERY inconsistent. I don't even know how to display it because I don't know if it's working properly. It technically "works" but kind of doesn't, and I know how to set up mixed devices, I've been doing it for 20 years. The device is also felt. Loose, and by that I mean the screws and fasteners don't feel tight enough because they rattle in a way they shouldn't.