I rewired a Mogami snake today, changing the channels 1/2 from TRS to XLR for an engineering friend of mine who is rewiring his studio to accomodate some new gear. It’s a simple & easy task, but for your reference, make sure you’re wiring the hot and cold (2/3) correctly. The correct wiring process is shown in this image, courtesy of mediacollege.com.
Not shown in this image: make sure you tie the chassis ground lug to pin 1 with some good heavy-gauge wire (I use 18), so that the chassis ground is an extension of the grounding sleeve of the cable. The only time NOT to do this is when you have a studio that is running some really old British gear, and most of the time properly-maintained studios will lift the chassis ground on the gear side, not the cable side. Those crazy Brits still call ground “earth”.