Hello !
Couple months ago I made a movie about replacing swing arm bushings (I use a kit I make). All is manufactured strictly to factory specifications. I made English subtitles recently so I can show you this. Maybe you'll find it useful, because widely available kits, at least in Poland, are garbage. If you stil have oryginal stuff in shops in Germany - lucky you
Link: https://www.youtube.com/watch?v=358Yecfv9CU
Best regard!
Roman