Sovereign is on the front, but the back has a plate that says Brother Model C. I am new to sewing and a friend gave this to me. I took the bobbin out, and when I tried to sew, it sounds funny, plus, the needle is to the left of the foot. I can not figure out how to move it to center. Also, I am not sure that I threaded it correctly. The front round thing click when the thread goes up and down. Please help. Lisa.