hi my Rover 75 drivers door is jammed shut!the fob opens the other doors but not the drivers door.I get in from the passenger door and double click the handle,but have to pull the locking pin up a little further for door to open!Alarm wont set because it thinks door is open.I have lock each door individually and make sure i turn off the interior light before i leave the car!i have WD40 the latch and left over night,but it did'nt work any ideas as to what is the cause of my problem.Thanks Denis Farrell.