Really ! thats a bit disturbing. How about the space between supers ?
It is. I can't comment as I only bought supers and screwed a couple together as a 14 x 12. The super I have here, and the frame resting across the box are indicating a 10mm bee space on measurement with my micrometer (frame side bar 140mm and shallow box 150mm). So, if anything a little toward/over the top side of an ideal suggested bee space. But, if most UK supers were 6 inches deep in Imperial days and frame side bars were 5 1/2 inches, the super-to-super bee space would be about half an inch, practically? This may account for a small amount of wax on the top bars or below the bottom bars.
Not yet found any problem with the roof being stuck down to the frames, but not long enough in service, as yet. The 10mm bee space (as a brood), would not be insurmountable for me, just a pain if I found I needed to reduce it slightly.
RAB