I am about to purchase a certified pre-owned 2014 335i xdrive with a manual transmission. One day before I am scheduled to pick up the car, the dealership calls to notify me that the 2nd gear synchro is broken. During the test drive, I did notice a slight grinding sound, but I thought this was simply me not being used to the new transmission. The car has only 34,000 miles. The dealership is replacing the entire transmission with a brand new one, which is covered under the factory and certified pre-owned warranties. The clutch is not being replaced. Should I be concerned about this car? I still have time to back out of the deal (I haven't paid the down payment yet). Any thoughts would be appreciated.