All great advice from great people in the hadit family. I just want to add in my little 2 cents.
I do see on your rating sheet that you have no secondary sc connections. I E, you are sc'd for lumbar, do you experience tingling in your legs? Have you ever complained about it to your primary care? Did you get diagnosed with sciatica. Is it possible that your service connect disability caused sciatica. Just an example.
You make need to look at all of your sc conditions and see what secondary conditions it could cause.
Keep in mind, there must be a nexus.
Just a thought.