If the step from 6 to 4 mm is too big for you: I used some 0.2mm shims in addition to my spacer to make it fit perfect.
See here (poor translation via google)
If the step from 6 to 4 mm is too big for you: I used some 0.2mm shims in addition to my spacer to make it fit perfect.
See here (poor translation via google)