Really tough suspension

[Espeefan]

Given enough time, the springs will break in. Your truck is just a rolling chassis right now. There will be more weight riding on the springs, once you finish it up and get all the other components, electronics, and a battery pack onboard. Don't worry about the stiffness just yet. The more you drive the truck, the softer the springs will get too. Trust me. The Tamiya High-Lift is the exact same way.