Is anyone having trouble with the hill assist? I find the two seconds between taking my foot off the brake and stepping on the gas two short. The car starts rolling backwards on virtually any incline. It seems like in my other automatic cars (2003 BMW, 2004 Lexus) I could pretty much sit on a hill without stepping on the brake and the car wouldn't roll back-- the idle seemed to be set at a level that kept the car from moving forward or rolling back. Maybe the idles were too high on those cars and they were in fact not working properly. Any thoughts on this issue would be helpful. Thanks!