my Heater cable is Verry tight almost like it is sized up? But when i disconnect it from the climate control unit it works just fine...??? What gives. I was thinking, maybe from no Lubrication over the years. I heard that small, toothed push nut break. I have no idea on the size... does anyone? & which lube can i use to get my cable working good again. Someone suggested to me using a Motion Pro Cable Luber, Has anyone tried that?