Glad to report that outside of the header font situation (and a minor quirk or two like having to specify a border color for fr_quote and not having hover), NS 4.77 even handles threads (like
the one referenced in #71-note to the unsuspecting; the link presents the thread in Forum 3.0 format) in Forum 3.0 format that broke with style sheets in Forum 2.0 format.
Wish I could operate right on no sleep; the thread linked to was the one refered to in #79, not #71. On that note; I'm calling it a night.