Stig: I admire your thoroughness, and your perspicacity, but no, there's no chance I could have filled the wrong hole. There are only two bolts accessible on the outer case of the transmission. One parallel to the ground facing to the rear of the bike, and one perpendicular to the ground, facing the ground. The first is the fill hole, the second is the drain hole. And on top of that, the service manual photo matches what the physical condition of the bike is. A rarity, I know, but it did. So I don't know.
Clampett: Yes, I did in fact replace the drain bolt before I added back the massively odorous gear oil. I wanted to make sure I did that, lest I screw something up. As before, I checked, and re-checked every step on the list in the manual, and rechecked again with the physical condition of the bike.
I have a 2000cc syringe (200ml) that I used, and I did two sets of 100ml fills. It's possible that 5-7ml remained in the nose of the syringe, but I did not visually check it with a light. I most certainly will do that in the AM.
I rode Diana to work and back this evening, and she was just as responsive and quiet as she ever was, and I listened carefully for any odd noises or out of place vibrations and the like, and she seemed just as good if not better. I parked her on top of a piece of cardboard, and will see if there are any leaks in the morning. I hope not.
Karl: I have no knowledge of this "American differential fill method" you mention. All I know is, I followed the specifications in the manual exactly. I would appreciate the benefit of your knowledge base regarding this American method.
Here's the page of the Service Manual which describes the fill procedure. What you see in the image, is exactly what I did.-
