SmarT-Slot Kit 4 (BigCatch)

I bought two sets of BigCatch saddles, and I need these for my rail. They are sold out everywhere. Is there an alternate t-bolt I can use, or is there a timeframe of when they might come in stock?
Collected on Yakima.com

The big catch saddles are awesome! My kayak slides on with ease and they are secure on the road. The only downside is that I can't lock the saddles to my bars. Which is why I need this smarT-slot kit 4! Will there be a restock anytime soon?
Collected on Yakima.com