What happened to Brock’s heavy wheel spacers for the BST front wheels?

Since the tsunami in Japan, the price of raw goods – especially exotics like titanium and tungsten – have become extremely expensive, even here in the US. The price of tungsten has more than doubled in some cases. We used a special machinable grade tungsten for our wheel spacers, which was very expensive to begin with, so our spacers used to cost $750…  We recently checked with the mfg. and the price for just the material alone was over $1000! The shop we use to do the machining (with special diamond cutters) won’t even make them now, because they are afraid of how much it will cost them if they scrap a piece. Unfortunately, we’ve had to discontinue them until the price of the material becomes reasonable again… if ever.