Hi again Sews. I didn't mean to go to the tension unit. I meant the tension on top of the machine, that is over to the left. Mimack is right. The stud looks bent, And you tried to put the bobbin on the stud where there is a groove for the bobbin to fit onto the spring? And it doesn't work? I don't knowLOL All I can say is start the bobbin winding and use a pencil to lift the thread, so it will go on even.