Help with assembly of Neu 1512

[DRIFT_BUGGY]

Pulled apart a Neu 1512 (one with screws on the end). Im pretty sure that the end had the two gold spacers (1 short and 1 long) and 4 shims/washers which 2 are different size. When I pulled the rotor out I pulled it that bit two fast and the gold spacer fell out but wasn't sure if anything else fell out. Later on I noticed another washer/shim but wasn't sure if I missed counted the rear or it fell off the front of the rotor when I took it out. Anyone know if the washer/shim goes on the front or rear?