Originally Posted by d.rickman
I compared our walking feet, and they appear to be identical.
While they may very well be identical, they may not be at all. The OP has a three sole foot and you have a two sole foot, so they are not actually the same part number.
Seems like if the OP provided us with the part number of her walking foot (from the box) and the model number of her machine, we could tell if it was the right foot for her machine easy enough.