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@kowalski
The CONdor CNC cog has a shoulder about 1.5mm less than the EAI or Dura-Ace.
It's a useful chainline adjusting tool if the EAI is too wide, or vice versa.
Which, in this case, appears to be a contradiction but obviously works.
This is one of the functions of the Tranny DB, simply to record combos that work.