I have a SC disability rated at 60% for lower back and Sciatica. I am in real need of different office chair. I have bought 2 chairs and 4 cushions but they aren't helping. What would I need to to to try and get a real ergonomic chair. like the 1,000's ones that I can't afford. I work from home so this would be for work. Any help or advice would be greatly appreciated. I am going through the Huntington VA office.