21' Overland with the massaging Napa seats: Front driver lumbar/mid back area makes popping/crunching noise from presumably the plastic within the seat above or below the bladders used to inflate the adjustments. Makes the noise when slightly more pressure into the seat is applied than normal, like initial seating or under heavy acceleration. (not the motors or the massaging hardware- adjusting bladders makes minimal difference) Took into dealer and they of course claim "normal operation." Passenger side doesn't do this. There are posts from older models indicating same type issue, curious if anyone else has experienced or its a one off. May need to take to diff dealer- ridiculously annoying. Thanks