I just a bought 2013 outback 2.5 limited with cvt, and there are a couple of issues that I never experienced with my forester. When starting up a cold engine, the idle is initially quite rough and the car shakes a little( some folks have said this can be somewhat normal, so I'm ok with this quirk). Secondly, after letting the car warm up and driving at slow speed down my street (15-20 mph), the car lurches like it's shifting up and down over and over. Once the car is at operating temp, this goes away. Is this just a weird CVT thing or do I need to get it checked out by the dealer?