Just noticed that one of the Specsaver ads has a man lifting a trailer tow bar, STANDING UP. pity Moira did not see this before stupidly trying to lift it while LYING DOWN.
Still do nor understand what John was hoping to achieve by removing two nuts. No way he could have thought that Moira would lie down to lift it. I got the impression she dropped it on her hand because it was too heavy, not because anything came adrift because of what John had down.