SOMETIMES MY STS WONT GO INTO REVERSE ESPCIALLY WHEN IT HAS BEEN DRIVEN FOR A WHILE AND WHEN PARKED ON AN INCLINE. AND IT RECENTLY STARTED TO HAVE TROUBLE SHIFTING INTO GEARS AT FIRST THIS ONLY HAPPENED WHEN THE CAR WAS DRIVEN A WHILE NOW ITS HAPPENING EVEN WHEN THE CAR IS COLD I HAVE HAD THE TRANNIE REBUILD TWICE ALREADY BUT IT NEVER DID THIS. ANY IDEAS WOULD BE A GREAT HELP.