Worked on the baffles all evening: 1. Drilled 5/8" holes for the two 1" scat flanges at the locations I'd already identified on the #4 baffle, then taped the flanges to the baffle and drilled the attachment holes. 2. Drilled the eight locations on the #4 baffles and spacer where I wanted to install nutplates. Deburred all the holes. I did not install the nutplates here yet because I want to powder coat the baffles first. 3. Located and installed about a dozen nutplates at the interface between the #4 side and aft baffle pieces. I spent a lot of time engineering this project, because I wanted to be able to easily remove any individual piece of baffling some time later. 4. Installed all the baffle pieces, then the lower cowl, then laid the upper cowl down, to see how much trimming will be needed on various parts of the baffling. I immediately identified several places that were obvious, and set to work trimming these.