i have never had any problems with brakes i think my HZ had girlocks? not sure what the wb has but i flushed the system the other day, put new flex lines on the front as they where perished and a new set of rear cylinder, i think the drums on the rear will need replacing soon as they are getting a bit thin. but never had an issue apart from crushing the rear lines that run down the chassis on the hz hit a large bump at speed.