Qlite troubleshooting steps guide?

Does anyone know if a qlite driver troubleshooting guide has already been created? I have pulled a few tips from different forum topics on what to look for, but need something more comprehensive to figure out my current issue. I have a qlite with 6 7135 added and the zener mod to run a XHP70 in a Convoy M1. My light was working just fine on two 18350’s for two days and now all of the sudden I only have one low mode. I looked for shorts and other obvious things out of place but have found nothing. I pulled the driver out of the head and powered up with the same results. My hardware all came from RMM pre modded and I just assembled. My XHP is on Sinkpad and has never been ran very hot so far. Any ideas or troubleshooting steps would be appreciated. This is my first build and this has me a little bummed that it is not working already. Thanks in advance

7135 drivers are so simple that many issues can be spotted by posting pictures of both sides of the board. Before you start soldering anything you should contact Rich though.

What are the possible causes of single mode low output? I will try to get some pictures posted soon