Hello, I have a seat Cordoba of the year 2000 on the screen. It turns out that before I passed the ITV I asked the mechanic if I regulated the back brakes that are drum that I regulate I think with a screwdriver inside a hole in the wheel. It happened perfectly to me since the previous year and that's why I asked the mechanic for that favor because he had the decompensated brake below 30%. Now comes the following and is that 3 days after driving the car starts losing the brake that the pedal reaches the bottom and a burning smell and I realized that it was one of the rear left, I know that even the hand brake It is difficult to raise it after regulating that only one point arrives is hard as very tight, what could it be? What is the footstep losing, reaching the bottom, and I hear how the air bursts through the ground and that smell of burning on that rear wheel? Greetings