Does anyone else have an issue with their lower plastic grille breaking at one or more of the 7 or so contact points? When I was washing it last weekend, I noticed that several of the connection points with the grille above had broken loose. Not sure if I caused it when I went over it with my washing mitt but I looked at the connection points closely and boy is that a cheap piece of plastic! Would I be covered under my warranty for this or am I SOL?