Don,
In hind sight that would have been the way to go but, who would think that there would a counter bore around the shank. The bottom was perfectly flat. Even without my reducing the width there was not much metal connecting the saw to the shank. I don't think I will buy another one due to that design.
Dean,
Bought it from Enco. It was made by Moon Cutters in Connecticut.
I intend to try brazing the saw back on by filling the counter bore (moat) with brazing rod.
Joe