The problems I had were not with the setting up the 1/4 inch seam but more to do with keeping the seam width consistent. I found when using my 97 1/4 inch foot with my bernina, the seam seems to get narrower at the end of the seam because the fabric would feed a bit crooked because of I think, not being on the right feed dog and also I had a problem with the tips of triangles being pulled down into the machine. So doing the modification I posted earlier helped with those issues. I now am more confident about being able to accurately get my 1/4 inch seam.