Quote Originally Posted by Alan H View Post
I'm guessing there's a mismatch in the bobbin tension and the upper-thread tension on your machine. Try adjusting the upper-thread tension and sew a few lines of stitching on some scraps. It also could be to some 'stickiness" of the fabric so that the needle/thread don't pass through smoothly.

That puckering is not normal. If the ironing takes it out and it stays out, then no worries.

The smaller box pleats look good!!!

I've done a bit of research today and it's one of three things from what I've read in order from most to least likely.
-Upper thread tension too tight.
-Stitches to short for this fabric.
-Characteristic of the fabric. (unlikely)

Going to mess with the settings and start ripping if I get a chance tonight. I've got a meeting to attend this evening, so I may not get to it until tomorrow. Well, maybe when I get home if it's not too late, I'll experiment with the thread tension.