Car seems to shift into D or R pretty hard sometimes. Most times it's when the tranny is cool. Mostly it appears to happen when going into reverse. It shifts so hard sometimes it causes the car to almost stall..sometimes it actually does. I dont really know what else to look at..its got plenty of fluid, filter has been changed, driveline is tight with no play. While driving, the car shifts smooth...i dont even notice any slipping either. Holds the power really well for the most part. Are there any sensors i should look at? It seems when the tranny fluid gets hot, it shifts smooth and soft.