Help required please, cannot open tailgate. Went to open the tailgate this morning and heard the solenoid operate and opened onto the latch, but could not fully open. Pushed it closed to try again and now will not open onto the latch, can hear the solenoid operating but tailgate stays fully closed. Climbed into the back to try and remove the tailgate cover, removed the two only visible screws but cannot remove cover. Thought there must be an emergency release somewhere but handbook does not mention one. Any ideas please! Many thanks. Andy.