I can't get hold of the garage and my car is booked in for MOTing at lunchtime. I have a seven seater, but two of the seats are never used, and therefore are shrouded in dust in the garage. The tester will not be able to plug the belts for these seats into anything. Do I need to put the seats back in the car in order for it to pass? They are SO heavy, and I just can't do it. Anyone had a similar situation?