This proposal makes the machine work in slightly more efficient ways, by ignoring initiated parts whose initiation has no effect.  It also clarifies the order of operations within a row.

In Rule 2.3.3, replace the text

#
# Step 2 - If the location of each Part on the workbench and the state of each part on the “Machine Parts” page is identical to any previous iteration of Step 2 since the machine was most recently Standing By then the Machine becomes Standing by, and any remaining steps are not performed.
# Step 3 - If no requirements for the Initiator of any Part are satisfied, then the Machine becomes Standing by, and any remaining steps are not performed.

with:

#  Step 3 - If for each part the Initiator effects are not met or would have no effect on the state of the Machine or any component thereof if met, then the Machine becomes Standing by, and any remaining steps are not performed.
# Step 4 - The parts on the Machine Parts page are examined in order from top to bottom and left to right. The first part whose Initiator conditions are met has its Effects carried out as indicated.  If this has no effect on the state of the Machine or any part thereof, repeat this step starting from the position of that part.