I tried for way too long at period 4, eating up the better part of 4 days.  I first tried to disassemble in the left, which I got working at 1/8 P and 1/11 P.  But then the other chamber never seemed close to working.

Then I moved to this layout, in which the right chamber disassembled, did berlo, and output the water.  At first, I could pass 2 air and 1 fire through the conduit, but that left far too much work for the left.  Then I reworked it and found the version seen here, which allows passing three fire at 1/9 P and period 4.

The next two days were a major roadblock.  I found many near misses for the task of fires->output but nothing actually worked.  I got really burned out.

On Friday I spent a couple hours on period 5, eventually succeeding, first at 49I with the same right chamber and then at 42I with a redesigned right chamber for period 5.  The solution title was "undercooked bacon" because I was very disappointed to fall short of period 4.

I built the showcase "Nonconforming catharsis 2" in reference to the week 1 lexC showcase 9 [2 6], out of my closest near miss period 4 solution.  There was one piston in the chamber walls, and an unused hex in the other corner of the left chamber.

Then, while on a long drive on saturday, I thought about how I could use the motif that worked at period 5, at period 4.  It required two synchronized arms passing the molecule back and forth between output and triplex bonder.  I had my laptop, I worked backwards from that in the hotel for another hour, and I finally got it.  I have beaten the pig.  Here is my fully cooked bacon.