A welcomed find on eBay!!

[Super]

Speaking of which, if anyone has or sees some of these let me know. Thanks.

I see them listed occasionally on the Japan Auctions. Sometimes in listings with other items so you have to have a keen eye to pick up on them. You may end up with things you don't need but you can always flip those unwanted items onto Ebay. A seller to always keep an eye on for these is Uepon18. They are always listing new parts from sets and I have seen these signal posts listed with them before but none at the moment. I have bought several items from them in the past with good experiences. Their prices are on the high side but when you need something sometimes paying a little more is worth it.

What did you use to stack up the automatic transfer station with?

These Transfer Stations can be stacked unlimited (expect AC to go to the ceiling). There are six points (see picture) of contact to stack them and are quite sturdy when complete.