Originally Posted by Shilun
No, they are flush with the middle chainring, so spacers are definitely required. The middle to outer chainring spacer is 3mm. I don't know if this is relevant?
So, perhaps a pile of thin washers and trial and error is the safest way to go?
I'd start with 3mm since there is some indication that's the spacing for the other two rings. Then try the shifting to see which way, if any, you need to go.