hi guys. i think im in thickie mode. the 908 has 2 spring steel flats running 3/4 of the car and fitting on top of the axle to keep it down.onthe frame youve got 2 adjustment screws on the buttom of this bracket fits 1/2 way under the back axle to stop the notor pod dropping out, the other part contains the spring steel pushing it down. when i adjust the grub screws 4 poitions it lifts the leaf spring up and when i ad just the rear grub screws pulling it down the motor cradle locks. is there a site showing what each adjustment does. ive even been on the avant site, but no explanations. can any one help. thanks john. by the way i,ve got an identical avant chassis with no back pod retaining screws the back wheels and pod fall straight out of the bottom of the chassis, whats that all about.