[JABURKHOLDER]

Concur with ball joint issue.
Something no one thinks about when getting an alignment is your vehicle is unloaded. Meaning no driver, no passenger, generally no cargo, etc.
To get the proper camber, castor and toe in / toe out, the vehicle needs to be loaded the you normally use it. This means the weight of the driver in the driver's seat. The weight of the passenger in the passenger seat. The weight of the cargo in the bed. Now this is going to sound crazy, but if you only use your truck to tow your RV, then you need weight in the bed that matches your pin weight. If you can't do that, then try getting at least a couple thousand pounds of cinder block, fire wood, old batteries, golf cart, something in the bed. Also something to substitute for driver and passenger weight. I said this would sound crazy but think about it. I know this doesn't seem practical but not doing so means your alignment does not match your real world vehicle usage.