Probably the most important setting post-lift is caster. A lot of chain shops will just slap their alignment gear on the vehicle, make the numbers equal and call it aligned. If they do not first max out the caster and get it as close to the factory setting of 3-3.5 then the vehicle will drive poorly. My first alignment after installing my lift was done by a chain shop and the result was horrible. I even took it back and asked them to max out the caster, to which they showed me they were only able to get it to 1.3. I drove it this way for a year and finally took it to a specialty wheel and alignment shop. I told them I wanted the caster maxed out, as close to 3.5 as they can get it. They ended up able to get 3.1 and the truck handles like its on train tracks. Super stable and easy to drive. Moral of the story, not all alignment shops are equal and the foundation to a stable lifted truck is MAX CASTER!!