Calm down, most of us will not have realized that 
The drawing is still very good, I was quite unsure about this detail and therefore I wanted to disassemble a few bolts at the weekend.
Seems that we need in sum three washers to reach the target of a fully functional rear joint…
I’m also quite unsure how to proceed with this post because it will belong to several known issues of the rear Strida region. To merge the posts is not that good, I think…maybe pin this post and edit with links to the other posted problems…