== units canary, root head
K= 12  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
K= 13  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
K= 14  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
== units canary, root finalA
K=  8  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
K=  9  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
K= 10  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
K= 13  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
K= 14  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
K= 15  == exact 188  residual 1  unwritten 0  (of 189)  _unit_preprocess_node_orientations
