on my 99-K i took my ruler- placed the 1/4" mark even with the needle- then put a stack of small (1"x 1/2") post-its along the side of the ruler- then taped them down- now i have an edge to line up for a perfect 1/4" --- of course as soon as i did this i found i was making 1/2 square triangles & my squares could not line up with my (seam gauge) ... thought= geesh- should have done these first-then taped down my gauge---oh well- it works very well- been on there for a month or so now----when i bought the machine it did not come with any attachments and only has one narrow foot---so i do what i can...