Originally Posted by Twilliebee
I don't know if this would help, but I really like the Magic Genie bobbin inserts. It's just a like piece of teflon you drop into the bobbin case to prevent friction. They were invented by Sharon Schamber. I got mine online but if you live in a larger centre they are probably in the stores.
In the factory, the "genie" was actually a piece of muslin, cut to fit into the bobbin case, with a drop of oil on it once in awhile. Either way, you may find that most of your bobbin problems disappear with the addition. <wave>