Just wondering if anyone else is experiencing this problem. Under medium acceleration, I can hear a mettalic buzzing noise. It sounds like a loose heat sheild on a muffler or converter rattling. I took it to the local dealer and they said there was definitely something wrong.They had it for 3 day and said they though it was a bad rear differential. They contacated the Honda engineers and were waiting on them to send some type of fix. So far they have tightend up some suspension parts and changed the diff oil. The dealer said they are waiting on further guidance from Honda. Its been 2 weeks. Anyone else having rear diff problems???