my 2005 and 2017 both did this... VERY annoying. Based on what I could find, it seems to be play in the gearing of the power seats. If you put the load on the backside of the gearing it almost eliminates it. Try putting the seat in the location you want it, and very briefly bumping the seat back in the opposite direction. If you are setting the upright/decline angle for example, recline to where you want it, then very briefly "bump" the switch back towards the upright direction of travel. by putting the tension on the other side of the gear in the mechanism, there is far less play in my experience.