I am working on yet another machine quilted top. I pin the layers together about every 3" and it feels perfectly smooth and flat when I start doing the stitching. But I ALWAYS have ripples once I start stitching. Not awful ripples but I can't seem to figure out how to keep that smooth and flat surface during the entire quilting process. If I stitch pretty close together it isn't as bad. I use a walking foot or a darning foot depending upon whether I'm stitching straight lines or curvy lines.
What am I doing wrong? I want the quilt to stay smooth like when I hand quilt. I just don't want it to take months to get it finished.