My mate has a 5 year old Vauxhall Corsa. He needed to replace a bulb, so did both at once. After replacing the bulbs in the holders he is having problems refitting the bulb holders back in their positions. It now seems to be incredibly loose. Like rattling lose as if something like a clip has fallen off or similar. If I cant help he is threatening to glue them back in Can anyone lend a hand ?