Haven’t tried it, but it seems to me you could just open
up your .map file in a text editor (Notepad), search
for the offending triangle and then simply reverse
it so it is pointing the other direction. e.g.
( -1600 448 0) ( -1728 448 0) ( -1616 448 0)
becomes:
( -1616 448 0) ( -1728 448 0)( -1600 448 0)
SiliconSlick

