I have 3 of these things I have a FB-20,FC-10 and a Fc-6 Maytag garbage disposer and the FB20 is different than my other two.The Rubber thing on the center the cushion is all rubber on the fc-10 and the Fc-6 but the HUGE FB-20 there is like cast metal and the under cutters are different also..The Flywheel looks totally different what did Maytag do and which one would grind better?I can't use just any disposer in our house or it will stop up all the time.If I use a Kenmore and put table scrapes down it the sink will back up,but a 1961 Wasteking I can grind up paper towels,wax paper even tea bags and never a problem.Here is a Pic of the Fc-6 this disposer is newer than the other ones the FB-20 is OLD did Maytag go cheap or something??

