Join Date: Jul 2004
Location: Ffld Cnty Connecticut
Bikes: Old Steelies I made, Old Cannondales
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Take a look at your current setup and replicate it with your new chainring. Take a picture to help remind you. The 2mm you're referring to is the space between the very top of the tooth and the bottom of the cage.
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike