The Shims (2) and the wave washer put the tip of the shift into the center of the three shift rods. I've also encountered the same issue and the last thing we want is for the tip of the shifter to contact two shift rods. If I remember correctly the supports (1) have been slightly different which really stumped me. I never could come up with a definitive answer on which side the wave washer goes on. I'm inclined to agree that the wave should be on the left as long as it has steel on each side and as long as the tip of the trunnion is in the center of the center shift rod you will have smooth sailing, er... shifting. I'm sure someone will chime in with a more concrete answer.
The passenger seat is 15 miles an hour faster than the drivers seat.
2017 Giulia Q4
74 GTV restored daily driver
71 Berlina in 2L restored driver
the ones that got away:
1959 750 series Giulietta Spider Veloce
1962 Giulietta Spider normale
1965 Giulia Sprint normale