I was reading quite a few posts about DIY Cables and they mentioned Techflex (Nylon strand wrapping) and was wondering if any local dealers sell this? Radio Shack, Home Depot, Lowes, etc. Has anyone ever seen this stuff in stores or an equivalent of the "real" stuff?? I would like to do a test run on a cable or two before I order a 100 foot roll to do the entire system and a few friends. I am located in Columbus, Ohio if there are any non-chain stores that carry it. Thanks!!