In the states, retailers sold the 3 barrel old stock for the same price as the one barrel after the price change.
I don’t know all the changes they made, but a few were the barrel nut addition, bottle on/off switch, and maybe some internal stuff that isn’t as obvious.
As for your customer service, doesn’t match mine overall. Excellent quick feedback, quick shipping, etc. I have one general question go unanswered the last 2 weeks but it was a small thing and not high priority. I also understand that the person I asked isn’t sitting behind a desk answering questions all day. I sent the same question to a retailer I’m familiar with and they answered it fast.