I'm not talking about the size of individual units; I'm talking about the explicit minimum on the number of non-character units described under the heading "Minimum Three Units" on page 134 of the 8e rulebook and summarised again in the table on p.135.Unit size is not in use anymore, it's all % now. If you've 25% core then all is fine.
@karlhunt; is there anywhere that the current known issues and/or progress levels is available on-line, like google docs or something?