I was always taught to tune suspension and alignment on the vehicles after running the car for a bit on the track. Reason being that if you set the car up as it comes off the track, the shock oils and different areas of the car tend to warm up. The oil itself thins (less viscosity) and hot/cold parts = expand and contract even if only minimally. With these variables, a cold car that has been freshly setup typically comes off the track way out of the ballpark and then you're back to wrenching...