Thanks for the info and the help at the US champs. I noticed you are using the New CRC Red spring and when I try that spring it is way softer than the old CRC red. The spring chart I'm working with shows the new spring equivalent of the old CRC red is right in between the New CRC Gold and the New CRC Copper? I ran the new red at Horsham in one qualifier and with 3.4mm rear ride height and loaded level pod and the chassis was covered in black track gook.