I've got a 2008 Lex GTS with chrome wheel covers. How the heck can you get the rear covers off???? I just purchased a TireTraker 550 setup, and I'm trying to get the sensors to the outside tires on. I can't get to the valve stems with my fingers to screw them on. I got the inside ones on okay. Any help?? Thanks in advance, and the boss and I will see you at the rally in a couple of weeks.