I used to have the same problem. I would get so frustrated and just want to through my machine and all out the door. I then found another quilter in my area and had her watch what I was doing. I was doing everything correctly so she sat down with my machine and began to play with it. She then showed me exactly what setting on my machine would make it easier for me to get that elusive 1/4. I had my needle set in a different position that didnt allow me to get full use of my feed dogs. Once the adjustments were made and I found a new spot to start lining up on almost all my stuff comes out just fine. Just keep trying and go looking for the help from another quilter if need be. I know it sure helped me. Hope this helps.