hi, my front brake suddenly went really stiff , i released all the pressure by letting all the fluid out, i started to bleed the brake (pipe on nipple into tub of fluid, nipple open then lever in, nipple closed, lever out, then repeated.) i noticed that there were tiny bubbles flowing out from the holes at the bottom of the master cylinder. then i noticed that fluid was dripping out of the master cylinder at the back like where it meets the brake lever. i then took the valve out and checked the seal for niks, there were none, i have no idea what to do, any help would be much appreciated as its beautiful weather at the moment and i cant ride
regards james