[AGAV13]

I have a 135is DCT and under half to full throttle acceleration in sport mode and manual shifting there is a pretty sever stutter in the engine after the shift to second has occurred. From there on shifting wise everything seems to be normal, which leads me to believe it is the engine rather than the transmission. Keep in mind i am breaking traction before, during or after the shift has occurred. This seems to happen about 70% of the time when i jump on it, has anyone else experienced this type of behavior? I am going to have it looked at when i bring it in for its service in another 2k miles, should i bring it in earlier? Any tips or suggestions are appreciated.