Hello, my armrest, when at the fully open position flaps about and doesn't hold open. A friends A3 armrest has two plastic clips that sit on the inside at the rear of the armrest and retain the top cover in the open position. My armrest has two small holes either side but no plastic bracket. Firstly, does anyone that has an armrest fitted have these little clips that the guide rails latch on to? And if so, by some miracle do you know where to get them? I've tried ETKA but I can't seem to get a detailed enough diagram of the armrest. thank you for any help or advice, Andy.​