[SOLVED] HELP: disassembly S-16 speed changing

Wow. Thank you SO much for not only finding that video, but also showing it to let others know how to dis/assemble these DUs. Highly appreciated. I've been helping out FfarquharDeveloper who has a document with info about the various drive unit designs and which items have them, so it should be of great help to her and anyone who uses the doc. Now we'll just have to know what the 1 speed variant looks like on the inside (maybe only the switch section is different).