I have a 5.7L OMC that is hard to shift. Using Sturate's web site the shift cabe has a pull of over 8 pounds using a spring scale to check. I am trying to replace the shift cable but it won't pull out of the hose it is in. the nut that is part of the cable is loose, but when trying to unscrew the cable twists and then snaps back. How do I get this cable out. I know the adjustment is suppose to be the hard part not this. The cable is disconnected on both ends.