I haven't had time to do any of these for a few months, since the recent changes (individual mob loots etc). I did a couple today and noticed that the TT returns are way below what they were before. It appears on first glance that the Key TT is not returned at all in loot. I suspect there's supposed to be a box at the end of each instance containing ~ 20 ped loot for key 1, ~40 ped for key 2, ~60 ped for 3 etc... that would bring their TT returns to normal loot levels. Not sure how these boxes got left out but here's how the loot stands without them.