^^^^^ that was my first thought when he said spacers... are they 'hub centric' spacers or generic? You should ONLY use HUB CENTRIC spacers on the Crossfire to ensure that they are centered and not throwing your front end out of balance...

Balancing the wheels should be a no brainer for them.. put it on the machine, spin it and then put the weights it tells them to where it tells them to....(I did say 'should be'....)