the handle has broken off, and I have glued it on before. decided it's time to replace it. I can see the screw on the top of the door and see there's one below, but I can't figure out how to get to it. do I have take the door off or just remove the plastic part. I have sort of removed it and it didn't seem like I can get to the bottom 2nd screw. what do I do? really don't want to have to call a repair person. thanks, and any illustrations would be very helpful.