I am not a manufacturer, I build accessories for my own professional use. I have produced several custom cages, rigs and eye cups for my GH1 & 2 that have served me well in production over the past few years. I originally posted this project to see if anyone could help me find info on the extension cables that I would need to complete this project. I thought some people would find this interesting and would offer up some constructive suggestions. I will share some of the details once the project is completed.