I am pretty sure I've asked you this before, and you've probably answered, but my darned memory seems to be getting worse over time. Do you have a good attorney working on this thing? Because you have been put through every hoop and then some and I think I've said before it's not you IMHO but just W.C. baloney. I could even see the positive change in you after you'd worked with the pain psychologist. There's nothing left for you to do, IMHO, but at least be allowed to try the SCS! And who is an adjuster. to say whether they work - he/she is not a doctor! ok, I'll stop now.
If they deny you now and you don't have a good attorney you need to get one cuz it's not you it's them!