I've been wondering if it could be the bobbin case. The machine uses a #15 bobbin - does that make it a 15 clone? Can I buy a new bobbin case pretty easily? I'll have to look at sewingpartsonline.com -they have lots of good stuff.
I realized my major allergy attack comes from not only trees and pets, but from all the old fabric I picked up at last weekend's quilt show. I've always had trouble with house dust. I put a batch in to wash, and the water turned somewhat brown! May have been the dust, more probably that I washed reds and some bled. Washed them twice with Retayne and Color Catchers, so I hope the dust and the excess dye have been removed. How do I clean up the case? I was thinking just using a damp cloth, but will try anything you have found successful.
I think I'll order a new bobbin case and let this baby sit for a few days - I have quilting to do! Thanks for all the help!