Do you use the oem transmission fluid in the DCT ,
When the GT-R was new they had a lot of DCT failures caused by the transmission oil, ( it did get destroyed if the temperature passed app 120 Celsius) and the clutches was burned.
Now they have a series of special oil see. http://www.willallracing.com.au/lubricants.htm
The reason i am asking is because i totaled my M3 and just bought a new one with DCT.