The transmission fluid was flushed not that long ago. The grind is only when I shift quickly. It does it from 2nd -> 3rd too, but not nearly as easily, as loud, or as much. It's kind of a casually driving fast problem... When I just open it up in 1st gear then go for 2nd, it'll grind all kinds like I missed it. If I do things a little slower when shifting, it won't do it. And when I'm doing things real hard and real fast (ie racing), it doesn't do it then either (3rd still does it, but it's very very brief). I've been careful to avoid the grinding lately, but now I'm chirping the tires a lot.