Well my car had it's mot on Saturday, faild on 2 things, the lights and the nsr brake isn't working.. Wen I changed my wheels the handbrake was on and you could spin the wheel as if the handbrake wasn't on, Just been doing some research and could it be the rear brake compensator? I read it can leak and leed to the rear brakes not working correctly? The garage said they will order a caliper and a handbrake cable, and they will fit them if there needed..But il just order the parts myself, just wonderd if this problem has happend to anyone else?