Originally Posted by WhyFi

Last Sunday, I noticed that I couldn't shift in to the smallest cog. I don't know how it got screwed up, but I dinked around with the limit screw and it was fine.

Today, about 35 miles in to my ride, I noticed that I couldn't shift to any of the 4 smallest cogs.

I haven't looked yet, but I'm pretty sure that it's a problem that datlas is all too familiar with.