Pepita I think I'll try what you said about putting something in back of machine and see if it helps probably the cheapest try and if it doesn't work I'm going to try to take a couple of cans and make something to hand it over my shoulders/back to see if it helps. I have a new chair but it seems that if I sit to long I get sciatic pain in my leg there is something about the way they make the cushions on the chairs. I guess I'll have to make me a cushion to put over it if you could just get comfortable for a little while. Sue