I received my new electric element for my oven yesterday, I need some help please. I have removed all the screws from the element where it attaches to the back of the oven, I have slightly pulled it out from the back, I dont want to pull forcefully as I do not want to pull any wiring apart. Do I have to remove this unit from the wall and take off the back of the oven to get the wires removed from this old element.