Hi all. Question to those of you that have this machine. Have any of you had a problem with the bobbin casing jumping from the "socket" area and jamming when the needle can't go down? The only time I have had this is immediately after using the free motion foot (darning) and returning to the standard or the walking foot. The first time it happened, I bought a new bobbin casing. Everything was fine for about 3 months, and now it is doing it again. Is there a solution to this, or something I am forgetting or doing to cause it? I love this machine otherwise. I have had it to the shop twice now, and they cannot seem to replicate the problem, so I feel like an idiot- the old ID-10-T issue my son reminds me I have.