Hi everyone, I have just purchased a B6200D, on inspection the left rear brake was not working, the seller told me it needed adjustment! Thinking it may be only need brake pads replacement, I went through with the purchase. After further inspection I have discovered that the brake shaft was broken, the pads and drum had welded together with rust, I guess someone drove it and sheared the brake shaft. My question now is how do I replace the broken shaft?? Thanks