Awesome, log, very detailed and thank you very much for your feedback!
Let me just address some points, firstly regarding the PSU mount. I have always used the same clearance above the psu, I make it as tight as possible to increase the psu and gpu compatibility to the max. As you noticed, the key was to push the female end of an AC cable all the way in, with that there should be no problem and it is also important for proper electrical contact.
Regarding AC port fitment on SFX psu's, yes, I must admit that is it not optimal for all the SFX psus (bracket is primarily made for ATX psus and if I thinned that part even more it might be to weak and prone to bending), but there are ways around it, one is of course using an adapter like you did, and another one is just rotating the psu other way, so it intakes the air from the rear side.
Now, regarding that bolt for the right side panel, that is a valid point, it is a bit shorter but in my testing it was ok, as long as it is not tightened too much but I agree, it should be a bit longer and I will include a longer one for the next batch, thank you for noticing that!
For the usb cable I am really not sure, I haven't tested them personally and never received any reports on it, but it could also be the motherboard, it is one of the first ones with this type of connector and in general some am4 motherboards had issues with usb. If you want I can send you another one to test out.
Once again thank you so much, this is really and awesome and rare example of an awesome feedback and I am very grateful for it!
