Approximately right after i purchased the car, i began having trouble with the brake. the brake system is harder than normal; when i apply pressure to the brake pedal, it feels like it has several layers until i push it to the end. it feels like it doesn't respond right away. also, the brake is giving me a strong respond, so i feel the car is shaking significantly when i do an immediate stop. also, when i apply pressure to the brake, the motion of the car rush forward and slide down before it responds correctly.