2002 w900b daycab cab shaking over rough roads

So I have a 2002 w900b daycab that the can shakes pretty bad when going over rough patches of road. I've done shocks the whole way around the truck. AG100 suspension everything has been rebushed. 8 new virgin drives and the steers are virgins I got off a guy he had laying around that only had 100 miles on them. I put a new leveling valve on the cab along with a new shock and a new sway bar link and 2 new rubber bushings in the front of the cab. New kingpins and one new tie rod end. Had everything aligned after repairs were made. Been messing with the air ride moving it up and down and it doesn't seem to make a difference. My steering box has a little slop In it which I am gonna get one next Monday but I wouldn't think it would cause it to.shake the way it does. Just looking to get other people's point of view to get my gears turning some more on this thanks!

 

The truck doesn't have a vibration when cruising it is just a bone jarring ride on some rough patches of road truck rides pretty nice other than that

 

I've driven dozens of different trucks. It should ride better than it does