Dealer says my control arm bushings need replacement at 68,000 miles. 2013 RRS purchase with 53,000 miles with Factory Certified Warranty. Shouldn't the Control Arm Bushings have been replaced under the Warranty? Seems like Bushings should have been replaced when car was Certified at 53,000 miles. Is it typical for RRS Control Arm Bushings to wear out at 53,000 miles.....or even 68,000?