Do you have the feed dogs down with the walking foot? And you use it just for SITD or for other FMQing? I have a presser foot that came with my SInger Quantum...for SITD and it has that little thing there to line up in the ditch...but of course...it is off slightly enough to make the stitch not go in the ditch....I have to pull it over and then try to keep that little line up thing lined up just to the side of the ditch..which of course is near impossible to keep it exact and the stitch in the ditch. I can do it with the open toed all purpose foot...but am trying to learn better FMQing and tried the walking foot...but it was so cumbersome...I must be doing something wrong as everyone else says it works good for them.....