Added filler to the remaining low spots in the upper and lower cowl, and the first whell pant.
Then installed a 5/8" ID hose on the 5/8" aluminum tube from the oil breather. I added a 5/8" to 1/2' reducer, and at 1/2" hose will be attached to that. That hose will penetrate the rear baffle and go to the inlet of the air/oil separator.
Dark spots are new filler in some low spots, and around the nose bowl that hadn't been filled before.
A 5/8" section of hose for the oil breather, reduced by a 5/8" to 1/2" barbed fitting.