Installled the crankcase breather hose. Worked thru the hole I previously reinfoced, then clamped to the engine breather outlet and the breather tube on the firewall that vents below the fuselage.
Riveted the remaining sections of the side-to-rear baffles, along with some reinforcement rivets. Figured out how I was going to run the CHT probe wires and how to make the sparkplug wire brommets fit corrrectly in the rear baffle. The O-200 is a 4-cylinder engine, but the grommets were for 6 cyl engines. A little bit of fileing and things will line up well. I figured out that the 6 cyl versions of the grommets were $6.75 each but the 4 cyl versions were - geth this - $32.50!