Last weekend I bought a new chain because I couldn't get the right amount of tension on my current chain. After 500+ miles on it I figured it was time for a change but I didn't have time to get to the Dillinger all week due to my hectic work schedule after being on vacation for a week. Finally got to it Saturday night.
Looking at the some of the data on Garmin Connect data for previous races at the Damn it's definitely not Domnarski Farms when it comes to climbing so I am gearing up to a 19t. I should have ridden this gear for Winding Trails and Massasoit. It looks like I have shark's teeth now on my 20t Kick Ass Cog, so now I am going to have to replace it, too. I think I am just going to buy 22t through 18t from Surly. Steel cogs will probably last longer, too.