Very true. That is frustrating.
By the way Marc, have you read/experimented with the Scandinavian form of heat treating, known as malming or "maelming"? I've started looking into it, as it was Daniel posting on PP many years ago who first mentioned it. He said it took a 160lb elm bow up to 210lb, and the process involves heat treating with pine resins, taking up to 10 hours.