if any bushes or suspension parts are worn then you shouldn't have tracking done till they are done as this wont give a true reading .
the rear tracking flags , they have to have the same number each side this puts the steering wheel straight
the front tracking gauges set up the tracking toe in and toe out and would be set to stop wearing on tyres
If i was you i would get worn bushes done A.S.A.P then take it back you should get a free recheck with 28 days and tell them you want your free recheck and tell them that steering wheel is out they will readjust
