Speaking of 3118s, I just used one of these to power a 2x12 Standel cab in stereo and it's working ok. My only complaint is the BT voice screams at you when powering on. I'll find a different solution but for $3 it's a great start!
Just finished boxing those Edcor. WOW! I only used my cans into a Mackie 1202 for a quick test but I can hear a HUGE difference! Warmer, fuller...all kinds of goodness. I'll try to get a more scientific test and maybe even make a video.
Your pot connection looks bridged between the green and yellow. Your switch off board wires look like they're not.....something. And I'd double check all those pots you've gone off board with. I'm suspicious of some of those landing points.