Front Tire wear front edge couping. on new tires after alignment! Could it be kingpin

I appreciate all the input and will try all the suggestion before just putting in kingpins. And you guys are right about they should of checked the front end before alignment. They said it only need an alignment and they obviously lied. They did use the laser. Also truck has 450,000 mile on it.

 

Also run 105 lbs of air in front tires . Thanks

 

Big Lou If you pull the same trailer all the time and it still pulls to the right after a 3 axle alignment I would be checking the alignment on the trailer itself and for the trailer find a shop that will check the alignment with a tape measure instead of a machine.