I was using variegated thread for my butterfly quilt and my top threading was very loopy and I was thinking that my thread was an issue. Then last night I felt like changing my needle from 90/14 quilting needle to 100/16 needle. As soon as I did this, my stitches were pretty again. So, looks like the variegated thread needs a heavier needle like 100/16.
This morning I was reading SewCalGal's quilting suggestions:
Guess, what here is the what I found, BINGO!
"Sewing machine needles:
- Topstitch needles 80/12, 90/14. 100/16 topstitch needles for heavy decorative thread and 70/10 for thinner threads, such as silks."
At least one problem solved. I'm just thrilled :-).