[d.j. moordigian]

Terry,

The frame is not tempered, if the metal was, it would have failed in the radius
when formed in the dies. When the metal is formed it work hardens, which gives
it its strength. This also imparts internal stress, one reason some parts crack in
the same place, part after part.
Try this experiment, wrap something in Aluminum foil to cook, then try to straiten
it....it's not that easy.
Heating the frame, a Very Dark Cherry, in a dimly lit shop should look about right, I would
think, Brent does this sound correct to you?

Dudley