Slack when engaging disc brake
My bike has front and rear mechanical disc brakes, and the front wheel is QR while the rear is fixed. My rear brake is doing fine and working fairly well. However my front brake has been behaving strangely recently. Whenever I pull the lever quickly, the brake will "grab" or "clip" the disc later (the distance between the lever and the handlebar is less than when I pull the lever slowly) and the brake sqeals really bad. If I pump the lever a few times before fully engaging or if I pull the lever slowly and gradually, the brake works perfectly without any squeals. Can this be the cable slack, with that being said a cable replacement would improve the situation? Any help is appreciated, thanks!