I have same scenario, my car is in the 9000 range so it falls WAY out of the VIN range, but it still exhibits some of the characterisitcs described. I went to the dealer and he basically said that he couldn't just do the reflash, but if I had a formal complaint about the cars performance, they could take it in, look at it, and most likely do the reflash as part of an attempt to fix it under warranty. Just an idea