I'm having great difficulty in getting aftermarket Ethercon cables to work reliably between the Helix Rack and the Helix Control.   The connection acts intermittent and power disconnects if I wiggle the cable, and often the Control never hooks up at all, however a genuine Line 6 Variax cable works fine. The cables test fine on a cable checker or on other audio gear. And this isn't just one cable, I've tried 4 different ones, either made by myself or other wiring professionals and they