I recently had my clutch replaced because of the leaking transmission seal. I was told that it would take up to 1,000 miles to break in. I now have 1,600 miles on it since the clutch replacement and it is still making a grinding sound. I was told the grinding sound is normal at about 2MPH but this is at about 40MPH and 2,000RPMs. I tried to figure out what gear this is happening at but can't seem to count them right. It happens during acceleration and decceleration. I am taking the car back to the dealer in a few days to have the shop foreman take it for a test drive with me. Anyone know what could be causing this grinding noise? And how persistent should I be about getting them to fix it?