Bunching problems on quilt top
I am quilting a quilt using intersecting straight lines. The lines are about 3" apart. The horizontal lines went in fine, although I noticed there was a little distortion/stretching when I sewed the lines closest to the edges. The main problem I have is when I come back and sew the vertical lines. I start getting bunching/puckering when approaching seams on the quilt top. Just some info:
- I spray basted my quilt. The backing looks perfect, no problems there. I also added some straight pins for good measure.
-I'm quilting with a walking foot- stitch length of 3.5
-It does not happen at every seam. About 40% of them I would say.
-I pressed my seams open when piecing.
Any suggestions? I go slow with the walking foot, keep any drag off the quilt, and keep it smooth and flat as it feeds. My gut tells me it's a problem with the basting- that maybe some of the seams aren't laying as flat as they should be. Anyone else have this problem? Thanks!