I have a 2010 Millenium that has developed a problem.
The first thing I noticed today was that when I used the needle up/needle down button it would frequently hesitate as the needle was moving down through the quilt, and sometimes would go up and down twice even though I only hit the button once.
I moved the machine off to the side, unthreaded it and removed the bobbin, and then let it run in manual mode. That's when I realized that every couple of seconds the machine hesitates and then speeds up before resuming a normal, steady speed.
I have turned it off, unplugged it, m