This last week I the mating surfaces of the plenum chamber cover, then riveted the cover together. Then I disassembled most of the vertical pieces of the baffling, primed the mating surfaces, and riveted those together. The basic baffle plans have the whole baffle assembly riveted together, which means that it is impossible to remove from the engine without drilling out a bunch of rivets. I decided to use screws and nutplates in strategic locations so the baffles can be installed and removed in sections.

This afternoon I reinstalled the baffling and did a trial fit of the cover. So far so good. I primed the mating surfaces on the front baffle pieces. Tomorrow I'll rivet those together and install them. Then I'll attach the fibreglas transition pieces that go from the cowling to the plenum chamber cover.