I've had my needle jump, too, and it is very frustrating. To make sure it is in the right spot, raise the needle and slowly lower it. If it's not in the right spot, move the quilt ever so gently and lower the needle into the right spot. Be careful when you stop. I found I was moving the needle a little sideways, and that was why it jumped. Take a break. Quilting for several hours is wearing you out! LOL