My '19 RST was a really nasty ride especially when hitting those freeze joints in the road. I added some weight to the rear of bed using a Shurtrax water bag and the ride smoothed out considerably. Still jolts around and at times when hitting things like pot holes or man hole covers it can bounce almost to the point of losing complete traction.
Funny, my wife and kids call my truck Storm trooper as well!
Go to Amazon and pick up one of those Storm trooper peaking out from cover sticker and place it on tailgate. We did and people laugh and point to it all the time!