After a 3 hour drive pulling into a car park my back was aching so I stretched it out against the back of the drivers seat when I heard a "pop" noise. I can only think that this was the lumber support bending back. The next day I got into the car and when I put weight on the back of the seat I experienced the same noise. Since then I have been careful not to lean back too hard and haven't experienced the same noise. But now as I go around corners and my body weight shifts left and right I can feel almost as is something is shifting left and right in the seat front with a quiet "click". I guess I've managed to break my lumbar support. If I have I don't think much of the robustness of the build because when it went "pop" the first time I wasn't putting that much load on it. Has anyone experienced anything similar and if so what did you do? Thank you!!