you have 8 washers
6 in the middle are all the same and the 2 on the ends are the same so how can that be confusing
i have never work on one but i can read a parts diagram
you bought new Orings and new screws and you selected shims that are 8 x 14 x 0.5mm and a standard shim would be a 8 x 14 x.0.4mm
so i am still puzzled put the Orings where the Orings go the hard parts can only go together one way and screw it together
you should be able to read a parts diagram
https://www.feinwerkbau.de/en/service/downloads/technical-information/exploded-drawings