Drilled holes in G10 fiberglass electrical mount plate, began to mount up some components using spacers, realizing I will need some more M3x20 screws and a set of stubby Allen wrenches, and designed & printed some rectangular 00001-014 spacers for the inverters and some cylindrical 00001-15 spacers to mount the entire panel to the aluminum frame. While this will work, it would be better if I planned out the electrical subsystem placement to not shroud the hardware mounting the panel to the frame underneath the hardware mounting the electrical components to the panel, as that just makes things unnecessarily difficult to install.