Continued the process of fitting the installation racks and replacing the nuts with nut plates. Added an 0.032 spacer between one of the angle brackets and the rack to center the rack better (compensates for uneven placement of the aluminum angle on the panel. All done except for replacing the 8 screws with new ones that are the right length and haven't been partially damaged by many installs and removals.
Filed on edges of instrument panel and screw holes to improve the fit and allow all the screws to be installed.
Test fit instrument panel with rack installed and then did a rough trim on the bulkhead center hole for clearance for the instrument rack on the left side (approximately 0.3").
Sat in the airplane with the instrument panel installed and thought about the assembly order. I want to leave the top skin off as long as possible, but it gets harder to install the longer I wait.