Decided to tackle this job last weekend and managed to destroy the counter sprocket bolt in the process. The damn thing was on so tight, I had to apply some heat to it for it to brake free. They guy who I bought the bike from was a real bonehead. The more I work on it, I find they guy didn't pay attention to the details. Anyway, I had to order the bolt as no dealer in the entire San Francisco Bay area stocks it. While I am waiting, I was wondering how many links I'll need to cut down from my 120 link chain?