1 /5 Dan: They replaced a gasket, told me it might fail, then crossthreaded the nut half ass back on when they put it back together. Place down the street was busy. Next time Ill wait.
*edit*
This work was performed on a 99 k3500 about 8-8-24. Unfortunately I have it apart in my front yard an hour away thinking it was just apart and wouldnt be a problem. It wouldnt have been if someone hadnt impacted a nut on over scale.