I have fitted the harness foot to the 205-6 adler. I am still having problems sewing. the top thread is breaking and its not feeding at times. if I got forward 3 stiches, reverse then start sewing it refuses to feed and the needle just goes up and down. im using 12 poly cotton with a 200/25 needle. i tried to make a pouch out of bridle leather this afternoon combined thickness of about 5mm and it trashed it. its been to adler and was serviced. getting sick of paying people and they don't fix it.