I have a 2014 base Cayman with a PDK transmission and about 11k miles on it now. I've noticed lately that when I put the car in park and don't engage the hand brake, the car rocks back and forth on the slightest incline until it finally settles. Is this a bit of slop in the transmission? It seemed a lot tighter when it was new. Only 11k miles now and I haven't abused the transmission at all. It makes me feel like I'm in a cheap Toyota or something. Should I have it checked out? Has anyone else experienced this?