I've checked every item again and they're all in the SBQ (that's an issue sometimes, that they aren't actually in the correct shop) and they all have some on site!

You have to remember that this line is pretty popular, so people are likely putting the items in their wardrobe rather than selling them off. :P Looking at the stockings specifically, almost all of them are in wardrobes. A lot of the rarities of this line are higher up (quite a few 90+), so I'm not surprised they haven't gone out a whole bunch tbh.

It's not broken though, , so there isn't really anything to "resolve". Right now there are roughly 200 SBQ items that are rarity 1-99, meaning around 200 items that get chosen to restock in the shop. Like I said, this specific line has a lot more higher rarity items, so it's not surprising that since it's the newest and higher rarity that it isn't widely available yet. Also there are too many of each of the items on site at the moment to come just from drills, so they are def going out via the shop too. :)

Next time we add a new line, I'll be retiring 2-3 lines!

I promise you they aren't broken. They are added in the shop like literally every other SBQ line. They're just rarer than other lines because they have a lot more r90s etc. If they were broken (and only going out via something like Drills) there would be maybe 10 on-site or 25 at the most. Just give it time :)