I have heard that "Loose Handle Syndrome"
was endemic to Dial-a-Matics. Something about the way the handle connected to the body of the motor being very flimsy.
I only remember one family who had a Dial-A-Matic. It was white and blue, with some kind of flowery patterns on the front or something. I only saw it once, standing in the front hall closet, and never actually saw it being used. I do recall it had a transluscent vinyl sack for the attachments -- it was hanging from a coathanger next to the hose.