Y'all, I just had to post one more time. Last night I happily completed my feathers. This morning I'm going to quilt straight lines on some stripe fabric. To match my colors I had to reverse my threads. Brown Superior Bottom Line from the bobbin to the needle and cream Superior Bottom Line from the needle to the bobbin. Hope that makes sense. Exact same thread, nothing else changed. Disaster. Thread shred. Thread dots. Curse, growl. Just for the heck of it, I got out my blue dot bobbin case and tried that. Miracle. Slight top tension adjustment. No thread shred...yet, and no thread dots. Amazing in a not very logical way.
If I ever finish I'll post a picture of this disaster. I'll have billions of threads to bury due to all the stops & starts & thread breakage, plus I'm out of town all next week so it'll take a while.