I noticed Ty has posted a carpet setup, although I'm really not sure what use it is since he's using an Avid chassis of unknown dimensions. Two things occurred to me tho:
http://www.tytessman.com/setups/d413-setups.php
1) Only 50k in the centre?
2) Still appears to be running lots of droop
I ran my car on astro for the first time a couple of weeks back (Yatabe Arena) and it was a bloody handful! Super edgy and very unforgiving to drive. Tried a lot of things to try and tame it down, but ran out of time in the end and left not happy with the car.