Let's try this based on what you have: outer belts - bolt, rubber washer, belt, metal spacer, large washer, body; inner belts - bolt, rubber washer, belt, larger washer, body. The carpet is shown as being cut to allow the large washer to press against the body.
The assembly manual shows something different: outer belts - bolt, rubber washer, belt, rubber washer (again), large washer, body; inner belts - bolt, belt, large washer (only), body. Again, the carpet is cut. There may be differences in plant and date of build, so I'll let others clarify.
That doesn't give you much.
Jim