Somehow, the overfill protection float in my Whirlpool dishwasher came off during the last cycle I ran...and it melted on the heating element. Do you know whether or not it is a simple replacement? I've read an online manual for a similar dishwasher, and it sounds like it simply snaps into place. Any help you can offer on that matter would also be appreciated. Also, any ideas you have about how or why it came off would interest me greatly.