What about a 401? I went in to look at the hand wheel and motor boss configuration and Oh Wow!! There's no motor there, it must be internal, how could I have missed that??? I seriously cleaned it, oiled it, and all that jazz- it was even so jammed I thought there might be something lost inside it and ***I didn't even notice it had an internal motor***!!! I would have put that in all caps, but it is not allowed. But I did actually shout out oh wow. DH is used to these sorts of things, so he didn't even lift an eye brow. Staid engineer there.