Started on the baffling and yes the plans are baffling, in regards to the placement of the oil cooler. I mounted it slightly higher so the cooler was not being blocked by the fins of cylinder #4 lots of measuring, and measuring so it was right. I drilled/deburred/countersunk appropriate holes, gave it all a good scrub with a scotchbrite pad, deoxidined and alodined all the pieces and riveted together. Started on the cylinder baffle #3, drilled, clecoed alodined all the pieces ready or assembly.