Believe it or not...my Wayne bus body has no rivets. The entire body, inside & out, was assembled using 5/16, slot-head screws. Even more of a bit*h to remove than rivets. To clarify, I will be spot welding the skin only to the ribs...not the frame. And once I have removed the old skin from the upper rub rails down, the spacers will be a breeze to get to and replace.