Originally Posted by
Tartan
I have been quilting for over 30 years and lines that cross over already stitched lines, still give me trouble. I find my Machingers gloves help and I make a frame with my hands around the needle gently pulling outwards when I come to an intersection. It may be time to reevaluate your quilting design. Can you SITD lines one way and instead of SITD the opposite way, quilt little motifs between the lines?
When I come to those intersections, I leave the needle down and tug on the intersection just a bit. Seems to straighten out the fabric and works in that bit of extra to avoid the puckering. I do straight line SID with a walking foot. I second that suggestion to notice that you have put the presser foot lever down if you are FMQing. My expertise with FMQing is not good but I have "best" luck if I leave the feed dogs up so I feel that I have better control of the movement and, even then, my FMQing leaves much to be desired. Good luck.