I've been getting a little brake fluid on the front forks bars etc. Redid the washers a couple of times and finally narrowed it down to a small leak between plastic and metal on the outlet side on the master cylinder. Anyone have any tips for repair or should I just replace it? When I tore the bike down the paint was peeled around the master cylinder so pretty sure it had been leaking for quite sometime. '78 KZ650 (switched to DOT 5)