Hello all, I've noticed both gas struts on my rear door/boot are fairly corroded, plus I've noticed the door doesn't come up as far as it should without a bit of help. Trawling the internet, there's a huge range of different makes from £7 each up to £50 each. Does anyone out there have any recommendations or advice? The old buy cheap buy twice comes to mind with some of the less expensive units. Any help would be greatly appreciated, thanks.