borderlands-2
I'm stuck in the Shielded Favors quest in the Southern Shelf. I was doing a different quest, turned it off, finished said quest, and returned to this one. Claptrap told me to run through the fence, but it was already turned off. I'm stuck in this quest now.
Do I just ignore this quest or…?
You need to cross the first bridge and then immediately turn to the right. You'll find the fuse box out on that ledge, it's facing the cliff.
TL;DR: On Normal, Scarlett's and Torgue's campaigns are supposed to be taken alongside the main quest, at any point since level 15. Hammerlock's and Tina's - after the main quest. On TVHM and UVHM - any campaign at any point.
Campaign DLCs scale to player's level when you first visit them, but with restrictions in Normal and TVHM. These are:
Upper bounds is what I observe when returning my level 50 from TVHM. Lower bounds are what I see when jumping there with a level 8 character.
Big Game Hunt and Dragon Keep are the ones definitely designed to be taken after the main quest - other two are actually a breeze if you are level 33-34 after the main quest, and especially when you complete them at 36-38.
Side note: Mr. Torgue's Campaign of Carnage is NOT similar to Mad Moxxi's Underdome Riot - it is not a ladder of lots of rounds on a few arenas. It is what Underdome should have been - a full-sized quest line built around a tournament and several arena (and non-arena) battles (and non-battles).
Best Answer
Shutting down the fence ahead of time is perfectly fine. You should be able to pick up the fuse you need near the porta potty.