I don't know if this resi neck is what I'm thinkin of, but if it's what I'm think of, I broke my gooseneck, so ordered another 2, 1 for spare (came in usual superb time), got an adjustable gooseneck and a flexi or swivel adjustable one, man what a load of rubbish, seriously?unless I was doing something wrong the brush was just going everywhere, I tightened up the screw which helped, but not my kind of thing at all, I had to go so slowly and carefully or else the brush would just turn on its side.
like the new locking mechanism on the new goosenecks tho, a lot quicker and easier than undoing a numpty on the older ones. very nice.