So here's the scenario - I'm at 9/10 runestones and REALLY want to finish my cloak, but I have a run that I'm leading on Saturday. If I were to get impatient and go into flex, get some boss kills, and hope for a runestone, would I then be able to go into the flex raid again on Saturday and kill the same bosses, without loot (much like repeating an LFR wing you've already completed)