I believe (hope) momentum will pick up for the zxxl preorders closer to the June 1 deadline. I will be putting my preorder in around Memorial Day weekend myself.
It really sounds like your oven/capsule is not seated correctly. What do you mean by 'the top lip of the capsule sits 1-2mm above the top of the ceramic joint'? You're not inserting the capsule upside down, are you? The bottom of the capsule sits on the ceramic joint...
I just ordered a Vapman 2.0 today and took advantage of the sale! My station arrived today as well - I’m all set! Never used a VM before so I’m pretty excited…
It comes with a little silicon adapter that slides over the glass tip, it makes a seal possible in most cases I have found (although bowls with single hole in the bottom makes a hotspot, better with flat bottom screened bowls).