I've decided to have my hardware taken out..
Had a couple of hardware block injections that gave me relief for a couple of days each and feel cautiously optimistic this will help.
The pain is only on one side (the side w/ hardware) and ironically, it was the better of the two sides pre-fusion.
My bad side is probably 90% better after surgery.
Fingers crossed this will at least improve the chronic pain I've endured.