I am home from the hospital where I have spent a good deal of time recovering from an accident as a result of a chain failure. I am searching for some rhyme or reason that it failed, and am looking for others who can help shed light on a very dark spot in my cycling. I ride a Colnago C-50 with Campy Ultra group. My chain has a little over 3000 miles on it, but is within limits on streach. (I had slated replacement this next week...) I am fanatic about maintaining the machine and use Dumond Tech lube before riding, wiping down any excess. My friends work their machines until they skip. fail or slip, but I try and replace parts before events occur. The chain snapped while accelerating in traffic, and I hit a car and went down. I have read posts indicating people re-using pins etc. I would recomend following the manufacturers instructions to the letter. It will be months before I am recovered, and I am very lucky. Any ideas why?