I have Fibro too and have to get up and stretch often. I'm going to try the tilting with the door stops. I have one of the risers (not the slanted one someone on here makes) but a level one I got from ebay. I don't think I'm tall enough for it. My shoulders get so tense I have to stop and use a heating pad and take muscle relaxers...then I'm out for a nap. :( I have an extension table on my machine so not sure how the door stops will work, though.