I'm banging my head against a wall since I learned of how to find the bugger known as Jimmy Jenkins and how to exploit the Wildlife Preserve map using an unfinished Doctor's Orders mission. I've completed that mission on all earlier play-throughs leaving me with farming areas in UVHM. Nor can I use another character because I'm looking to finish the Achievement-Challenge which includes the Jimmy Jenkins challenge as well as all the other non-map related challenges. That'd be one hell of a time spent playing the game with all those challenges to redo!
If anyone has Tannis' Doctor's Orders mission incomplete on a playthrough below UVHM and is willing to lend a hand please contact me on Steam, Handle: KicknGuitar. I'd much appreciate it.