My wife and I have identical Ramblers and we are plagued with brake problems. We have the Zoom brakes fitted to both of ours and the wifes' right brake is seizing at unpredictable times. We've had it to a local bike shop for repair twice and just yesterday it locked up again, forunately close to home. The cable isn't fouled in any way and runs free in the housing, but the lower actuator arm won't return when the grip lever is released. I can manually twist it to relaease the brake. I'm not sure whether there is a return spring issue or an adjustment problem. Any advice for a newbie?