I've learned that one of the required service tasks for my 2008 6MT M3 is replacing the transmission fluid during the 1200mi first service. I've learned that a number of dealers are failing to do this, and my dealer apparently failed to do this task on my car. My 1200mi service was performed in September 2008, and I've put about 6500 miles on the car since then - no track days, but definitely some spirited rowing through the gears. What is the likelihood of damage to my 6MT transmission? What should I expect/ask for as a remedy?