I have a 2010 Ford Edge FWD with 61000 miles and 3.5L engine, and for the past few months it has been very difficult to shift from park, more so when it is cold. when it sits overnight it is very difficult and takes anywhere from 1 minute to 5 minutes to finally release. When the brake is depressed and I squeeze the shift release button, it does not depress all the way, after pressing and holding the brake, releasing the brake a few times it finally releases and I can shift it. Any thoughts?