Originally Posted by patricej

all the above, plus ...
remove the metal plate, too, and vacuum the entire area. tweezers, toothpicks and soft brush to get all the bits and bunnies.

swing a dead chicken over your head, counter-clockwise, while standing on your left foot only, and sticking your tongue out toward the right. this might not solve the problem but if somebody takes a picture you'll have something to laugh at while you continue your search or the solution. ;-)