I HAVE AN 89 MURCRUISER 5.0 LITRE WHEN I PUT THE SHIFTER IN FORWARD OR REVERSE IT STALLS,ALMOST LIKE A KILL SWITCH.I HAVE NOT DONE ANYTHING TO THE SHIFTER OR CABLES IT JUST SAT OVER THE WINTER.FIRST TIME I TRIED TO SHIFT ****ER WAS BOUND.AFTER MOVING BACK AND FORTH IT FREED UP.ANY IDEAS ?