Just wondering if this is normal, when I flip the switch and turn off the 4wd and start moving , after about 10 feet or so there is a release of engagement ( not sure just how to describe it ) and then the front end seems to freewheel fine. I guess what I want to know is, is this normal or should there be instant release when the switch is flipped off and instant freewheeling when I start to roll ? Thanks for your answers !