Is anyone having a promblem adjusting the knee lift or is it only me? When move it to the left more, after a while of sewing it goes back to normal. My dealer gave me a new one but it still does the same thing. I move it over and tighten it up, even had DH tighten it for me and it still happens. Am thinking of drilling a hole so the screw stays tight. I love my machine and think the option for the knee lift is great, just wish it worked.