my cables always get stuck in the brake position. I have to get under the truck and wiggle the 2 into one cable to get it to release. are there replacement cables available( the separate ones connected to the brakes)? what kind of job is it to change them? I have two young girls (4 and 5) and they are always bombing around the farm with me. I'm afraid that they could put the truck in drive when its idleing. I hate the fact that the brake dose not have to be pressed to shift out of park. accident waiting to happen!