The screwws with the springs attach the horse shoe piece to the back of the front face plate panel and there should be about 10 of those. The big round head slotted screwws attach the front face panel to the main frame. Ya need 8 of them. Ya got about 3 extra ones of those. If I remember right, there are 4 spring screws holding on the add glasses too. SOOOO, ya need about 18 of them screws with springs. Kent.