I regrettably popped out the entire bobbin ensemble. I put it back in as best as I could remember it and was able to sew away for a while. Now, the upper thread keeps getting caught in and under the bobbin. I must have put the three bobbin parts back in incorrectly. Everything else is unchanged and looks okay.  What is the name for the piece I am holding in the picture? The one I wish I never took out of the machine..  Can you tell me the correct orientation of this piece, and thus the