Has there been a breakdown by a distro of how Stern's ordering/allocation system actually works?

Clearly just because they are building GZ Prems in March, distro x can't order 50 of them without some getting pushed to an August run instead - I presume that distro was only given something like an allocation of 25 GZs for that March run for example. Presumably allocation size is based on previous order volume from that distro or something?

Pretty frustrating overall - I felt lucky to get my GZ Pro early November - I passed on a Prem partially due to not wanting to wait until next summer...