Fitting grill element to Zanussi ZCE641X?

I did notice that it seemed an easy task to fit the Zanussi
grill element 5038 to my ZCE641X oven ie, disconnect electrics to oven, remove shelves, undo 2 fixing plate scews from the top underside of the oven,undo 2 scew fixing for the back plate ( if it is screwed), pull out the element from the connections. Fit new element in reverse order.

Please advise