After Charles's suggestion of trying eBay for bearings for my rock tumbler, I tracked down these 0.5" pillow block bearings:He says they're made by EBC and S&H for four will be $27 surface mail to England. Looks like a pretty good deal and not much over the £20 I wanted to spend. They aren't self-aligning but I'm not sure I really need it. What do people think? Are EBC okay?