I have a HF 8 1/4" miter saw that I would like a metal-cutting blade for. I would like to be able to use my miter saw for cutting steel tubing and flat stock. It has a 5/8" arbor. It seems like the local places don't carry this sized blade, with the exception of the wood-cutting blade HF sells. Can anyone recommend a web site that has decent prices / service and might carry this sized blade?