Net effect appears to be something around 4mm more clearance between the ring and the chainstay with the CDX system. With the original system, I had to use 2mm spacers, and the ring just barely cleared the chain stay. With the CDX, no spacers, and there's a couple of mm of clearance.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.