Began installing the baffling for what I hope will be the final time. 1. Attached all the aluminum baffle pieces using final hardware. 2. Ran upper spark plug leads through their baffle holes and installed the pass-through fixtures. 3. Riveted the conical gusset to the lower inlet floor and the sidewall of the right inlet baffle. 4. Riveted the flange for the R magneto cooling tube to the R aft baffle. 5. Installed the oil cooler shutter. (I ended up polishing the ends of the shutter shaft using wet 220 grit and then 1500 grit sandpaper in order to make the valve operate more smoothly.) 6. Installed the four baffle tension rods. (The very first one I installed, under the inboard part of the #1 and /#3 cylinders, was by far the hardest one to do, thanks to me only having two hands. I had to create a tool to hold the aft baffle in its most-forward position in order to get the nut started on the threaded rod.) 7. Began installing the baffle seals using #8 washer screws and high-temp locknuts.