Please Help. My clutch is starting to slip on my 2018 WRX after only 28K. The car is all stock and I have made no modifications. I do not beat on the car or race it. Is this common? I find it hard to believe the clutch would need to be replaced so soon. When driving on the highway in 5th or 6th gear, and I accelerate, the RMP jumps up but the car does not respond, a second later the RMP drops and the transmission grabs.