I remember hearing that the first time you loot a check it begins a one week timer. Each successive loot drops the value until the 10th time means it is ransacked and will give nada.
So does that mean if I play the adventure once, if I want to keep having the best loot, I cannot play it again for a week? I've noticed that if I run an adventure on normal-hard-elite on the same day the treasure at elite is rarely if ever as good as it was on normal.
For that matter all my +1 items on korthos island chests were from solo difficulty.
Thanks!