So I completed almost all of LFR last night on my Death Knight. The Tier Shoulders dropped twice more, and twice more I lost the rolls. That now brings me to 0-40 rolling on upgrade shoulders in LFR - either Tier or the Backbreaker Spaulders. This streak is now becoming such an awesome thing that I'm almost going to be sad if and when I ever do when new shoulders. We'll have to see!
I've also apparently gotten pretty spoiled with decent LFR groups over the last few weeks, because I had one of the most horrible ones that I've seen in a while. We had two dps in the group that were only auto-attacking the entire time. Plus the normal stuff on Spine with one or two idiots killing multiple corruptions, and a tank that wouldn't hold the Amalgamation next to the plates.
So, I still have Spine and Madness to finish this week, so that 40 total could conceivably go up a bit before it's all done.