A friend of mine who is a PT came over to the house to look at my sewing set up and to help me get the best position and comfort zone at each machine that I use. He also did this because he is a guest speaker at out guild meeting for Feb. Our back is of course one of the most noticed concerns when sewing but out hands can also take a beating when sewing. I am so working on getting the best out of what I have to work with here right now. You may want to consider having a PT come to your home and look over what you already have and help to make workable adjustments. Call a local Physical Therapy business and see if you can arrange for a single visit for this purpose. My friend told me that many are the home care company that will send someone out to teach you proper body mechanics for very little$$.