Well, this is what I found.
So what did you find? If you don't have the tools to inspect it you will need to find someone who does. The threads are out of concentricity or off axis with the bore of the brake? Same thing on the barrel? Have you inspected the threads? What value did you torque the brake to? I'm thinking you need for certain what happened so this does not come back to you and so you know who is responsible rather than throwing accusations at the wrong party.