my f250 seems to have a breaking problem. The left rear tire locks up when i lightly touch the brake. But after driving a bit it starts to work normal. I was thinking wheel cylinder is locking up. I also use the parking brake alot on this truck since its standard. I guess that could be hanging up. Is there anyway to lube the parking break cable. The truck has rear ABS I was wandering if that could be causing the problem. Anyone with any ideas?