Jim,
You've already had a lot of responses, and I don't know enough to evaluate them properly. However, I can think of one recommendation I'd offer becore you start cutting, bending, or heating: get a spare. (_I'd_ get two, but I'm not all that coordinated. )
Good luck. I suppose heat-treating and re-forming the stone face by dipping it in a pool of molten lava is out of the question?
Frank McKenney
-- ÿThe most exciting phrase to hear in science, the one that heralds new discoveries, is not ÿEureka!ÿ (I found it!) but ÿ"That's funny..."ÿ -- Isaac Asimov
-- Frank McKenney, McKenney Associates Richmond, Virginia / (804) 320-4887 Munged E-mail: frank uscore mckenney ayut mined spring dawt cahm (y'all)