To transform the input into the output with only grab translate drop, you need to brake of chunks no smaller than 2 atoms at a time. I chose the procedure I found the most intuitive, grabbing the center and building a fire bow tie to make the outer triplex bonds, then rearranging back into airship fuel. I quickly realized the cycle savings from reducing the track length would be outclassed by the savings from making several products in paralell, so I upgraded from a single arm to a bi-arm. I theorize that making four products in paralell with a hex arm would give the lowest rate, but since 4 is not a factor of 6, may not help with cycles.