Looks like that's how they were meant to be hung after looking at the labels on the reservoir and the numbers on the rebound dampening adjustment. Glad to hear that cured the fitment issue.
A question about the preload adjustment . . . . is that the one that you would adjust for changes in weight on the bike such as a passenger or gear? How difficult is it to do? Could you instead adjust the compression dampening to compensate for the addition or subtraction of weight?
I go back and forth from solo to two-up fairly regularly and am just wanting to understand the quickest way to go about adjusting these shocks. With the Progressives, 1 - 3 turns of the preload ring takes care of me, depending on how much weight I was adding to the bike. It is realatively easy to do on those shocks since the ring is right on top. With these shocks' preload adjustment on the bottom, and needing a spanner wrench to make the adjustment, it just seems a little more involved. 
Brian,
You are correct. Pinkie is the one who pointed out that the rebound ring was no longer upside down, so I believe they're mounted as intended now.
Yes, the preload is used the same way here as on the Progressives, to manage the sag due to changing vehicle weight. It will be more difficult than on the progressives, but we've also got more range on these. I only got about 3/4 inch on the 440's, and have over an inch to go on these from my solo position.
I plan on using my headlight beam as my gauge for setting the preload. Load up the bike, point it at the wall, and adjust preload to re-aim the beam. If I don't get enough adjustment from the preload with the stock springs, I'll get a set of heavier springs for the long 2-up fully loaded trips. The springs in them right now are great for solo riding. Hopefully I'll be able to do a mock up load this weekend to see if they have enough for a heavy load. My gut is that these springs will turn out to be fine. They are a bit shorter than the Progressives as well as 15% thicker material (0.296" -vs- 0.318"), both of these measurements tell me the Bitubo springs will be stiffer than the Progressives and will be better able to handle the weight.
The real test will be to find a crappy bridge abuttment and hit it fully loaded at 80 and see if they bottom out. If they can take that, then they will get a major two thumbs up.