Thanks for the added info, Tom. I will wait to see what Rob Gillum offers. I don't have time to pursue this now, anyhow. Just toying with the idea. If Mr. Gillum doesn't offer a DIY kit, I will probably start with the woofer feed given that my 2.4SEs already have Clarity Caps on the coax.
I have seen people "upgrade" Thiel hookup wire. I don't buy it. Thiel (lexington) hookup wire is 99.9999%, long crystal, teflon jacket, 3 twists per inch. I've never heard or measured better from any boutique / branded wire.I trust your experience but I think I would at least try Cardas if I had the time and money.