I have a K5SS stand mixer which has served me well for a long, long time.  I received the ice cream attachment for Christmas and used it today for the first time.  To my utter dismay I could not get the drive assembly to fit properly.  Since I had all the ingredients ready to go, I was bound and determined to make ice cream today. I was able to get the drive shaft in a position so it was able to work the dasher. The ice cream is now in the freezer and I am optimistic it will taste good. However, the poor fit of this attachment is totally unacceptable. Of course this always happens on a weekend. I will be formally contacting kitchenaid this week to see what can be done to rectify this situation. In the meantime, I can not recommend this product.