Dear Steve,
Nice job!
One comment is on your diagram of the machine, the spool pin remains, whereas in the instructions, you hope that the spool pin will be removed. In order to visually encourage the packer to really get the idea of removing the spool pin, I might consider erasing the spool pin from that diagram where you have the blue and red and green sircles.
Also a question: You say 1" is better than 3" of padding; may I ask why? (I have no experience in packing machines. But one day I am going to buy Miriam's Pink Atlas and I will want to check her packing prowess ;-) hee hee)
-Cecilia.