Hey Greg
I leveled my car on 4 bottle type jack stands that we're sitting on some 4x12 pads for extra clearance to roll under on the creeper. Once I had them tacked in place real good I put it on the rotisserie and finished the welding. I imagine you could do that on the lift. Key is making sure you are level with the initial tacks. My door margin issues were more a result of so many different donor parts like doors and panels from several different cars as well as a repop or two from AMD