Like to say first thank you for the write up. Very well written. Is you could please send me DM. I'll send you some instructions that will help us identify the issue and see what we can do to modify it. Greatly appreciate the feedback.
Just installed it. Glad the pictures here show where the brackets go / how to put things together. Could have figured it out eventually, but first tried to pop the plastic pieces through the holes like a pop-it. When it was obvious they wouldn't fit, came back here to double-check.
Decent design - I like that we have screws instead of pop-its on the left side.
Slight concern it will rub on the rubber divider (bottom-right corner, looking at it from on top - almost looks like it has already rubbed in the pictures), but as long as it doesn't make any noise, not really much of an issue. Ideally, could revise the bottom-right corner 2-3 mm left in the next version, and avoid that issue.
Had to re-route one of my jb4 wires, as there's not enough space at the top-right, where I had previously routed the thick wire harness. Had to re-route to have enough space to route at the bottom-right as shown in the pics.
On the whole, if no rubbing/noise issues, easily 8.5/10.[/QU