1. Took delivery of my main panel and circuit breaker panel, which were cut by a local waterjet cutting company. They did a great job, I noticed that, in the design phase, an error had crept into the dimensions of the hole for my analog timer. Luckily, it's an undersize hole rather than an oversize one, so I can fix it with a file.
2. Filed the undersize hole to its proper dimensions, and enlarged all the screw holes to a clearance-fit.
3. Began fitting various components to the panel to check clearances and fit.
4. Positioned the racks for the GTN 650 and the GMA 245 audio panel, with a thick washer between them. Inserted the units, aligned the bezel depths, then taped the racks together to hold them in place. Taped the pair of racks to the panel and did a test-fit in the airplane, just to check (one more time!) that the GTN 650 will fit above the Z-brace behind the panel. As I knew it would, the rear fan on the radio will pretty much rest on the Z-brace. So everything looks good.
5. Marked the C/B panel for routing out the shallow slots for the anti-rotation washers that will go on the circuit breakers. (No photo).
6. Test-fit the USB charger and 12V port on the C/B panel.