One last thing (for this patch at any rate)
Formation 36 Recon Platoon
Initial availability date changed to 1/1958.
The first BTR-40s were apparently given to North Korea around 1958, in any case none were available to the north korean forces in the early stages of the war.
Source: “The KPA Mechanized Infantry Battalion," by Joseph S. Bermudez Jr
http://www.kpajournal.com/vol-1-no-7-july-2010/