I bought my bike used with 1500 miles on it from a Honda dealer two years ago and just rolled over 4800 miles on it. The first owner serviced it at the dealership, I do my own service as i'm an auto tech, using Honda oil and filters, I change it once a year as I don't put on miles very quickly. Since the first day I bought it, it would make a tapping noise while warming up, only for about a minute, until this last couple weeks when it developed a light knock with no load on the engine at idle and just above. I know rod knock when I feel it. I contacted Honda and they said I have to take it to a dealership and they won't offer any assistance as there is no recall on my bike. I'm not paying a dealer to have them tell me I'm shafted, I already know that! So I've ordered a 2012 engine for my bike and pulled the old one out. I found scoring in the oil pump, The crank bearings are trashed, and the crankshaft is grooved. I found a small amount of aluminum shavings the size of glitter in the oil, and one was still in one of the main bearing oil grooves when I took it apart. Here are some pictures I've taken. I'll take some more inside the engine as I further disassemble it (It's going to be a coffee table now), But I'll be putting the new (used) engine in first. I never expected this kind of poor quality control from Honda! They were the one brand for when it had to work it had to be a Honda! I think it hurts even more that they didn't even offer to diagnose if the problem was in manufacturing, They just said no, it's your problem now.