So I have a new to me 2018 p1k with about 4700 miles on it. I understand that when you place the transmission in park, regardless of lever position, it will place the rear differential in lock. My question is then I start the machine back up, I'm in turf mode, and place the machine in gear(forward or reverse) and go the start moving I will feel and hear the rear diff pop\clunk and learch when I make a turn or back up and turn around. After that the machine runs and drives normally. Is that the rear diff unlocking and is it "normal" or do I need to get it checked out? I'm on asphalt at the moment. Hope that makes sense