ok, the best best ever for freeing up moving parts like cables and chains and stuff like this. Get a metal pot. Something that you wont ever cook in. fill it with atf, brake fluid or ps fluid. the brak is the best. fill the pot and put the cable in there and heat the stuff. if you have a gas grill, i would do it outside away from the house cause you never know. dont get it too hot, but get it pretty warm, say 250 degrees. let it for a couple of hours and then let it cool. If this does not work, nothing will. you can PERMANENTLY lube a bike chain this way