Please don't rip a rare piece of wood just to fit a stupid machine.
If you cannot figure any way to use it yourself, please consider selling the lumber to someone who wishes that dimension, they will pay a premium for it. It is a very sad waste of a resource that is essentially gone, to treat wide boards in that fashion.
[By the way guys. There is no reason at all to be surprised that an old growth board of this size is not warped. There are old pieces that are made from Oak, Mahogany, Walnut, with boards that are sometimes over 30" wide. They aren't warped.]
Dave
Lumber Lover
[ 10-29-2001: Message edited by: Dave Arbuckle ]