Though they aren't difficult quests, i have 140 hours on my current lvl 81 character, and reallllly don't want to have to restart, get a character to lvl 25ish (to survive the deadric quests that deal with dremoras) and do all of those, plus half of the thieves guild quest.
My question is this. Does anyone know of a way to regain the skeleton key after returning it to nocturnal during the thieves guild quest? Is there anyway around this aside from completely restarting, or backloading to when i was maybe lvl 40 and only 20 hours in?