Bummed to hear about your deadlift woes Ben. This article by Steve has helped me alot:
I would keep things simple by building a strong upper back. Get stronger by maybe doing triples and some fivers. Maybe deadlift every 2nd week. A strong squat will also likely build the deadlift up. Last but not least, fly to Wisconsin for some coaching. If that's not possible, try to look up some powerlifting crews/teams/feds in your area. The Crew has been a godsend to my lifting. There are some members who drive for 4 hours one way to train with them.It's that priceless.
Other than that, work hard and never give up in your pursuit of greatness. It will come to those who really want it.