Msews I also have the brother pq1500s but found I had to add another thread quide to work with a ruler foot. I also found the Juki foot which is spring loaded so you can adjust the pressure on the foot works much better than the clarity or westelee the spring helps to go over seams much better and I have less skipped stitches. The extra thread guide allows me to move in pretty much any direction. I have found the Judi Madsen ruler with the angled handle works the best for me for a small straight ruler. The angle seems to make it easy to use in any direction