I am new to driving a 23T altered. My car is a 125" S&W chrome moly hardtail chassis with a 6.0 certification. I am currently running a 468 BBC running in the low 8's. My plan was to take time to learn the car before stepping up to a bigger motor. However, I am having trouble shutting the car down after each pass. It wants to bounce and get out of shape making it difficult to control. This past weekend, I just used the chute after each pass which made it much easier to control. This has me very frustrated knowing many of you are going way faster than I am and shutting down with no problem. Hopefully, there is some kind of secret to slowing this thing down you all know. I am running 30 PSI in the front tires, which are the wide ones, not the dragster tires. The rear slicks are 33X15-15 Hoosiers with 5.5-6.0 psi.