I have one that I pulled from a B3 worked fine when I received it. I only needed the case from the B3 as it is the same width and rail spacing as the Z9 and z9 mini it is just longer. I got a really good deal on 3 used Z9 boards and modified the height to fit, re flashed V9 controller I had laying around and.... ADHD kicking in...anyway I have the working controller and the B3 boards as well if you need them. Send me a PM or let me know where you need it sent.

Keith