2019 Kenworth t680 paccar mx 13. Changed the front rear end and the truck drove smoother than it did with the old rear end. After 3 days the truck started driving rough. I could feel shaking in the steering wheel and under my feet. Also, I could not hear the truck shifting gears from neutral to first and reverse after replacing the rear end. Now, I can hear it shifting. The truck is beating me to death.