I noticed on his fantastic P-51B skin, he isn't using the default US star/bar insignia, which comes from the file MARKING.bmp. He probably blacked out the MARKING_a.bmp mask file, and then put his own insignia in the skin - this allows him to build the insignia under the panel line/rivet layers and add weathering details, etc, (all to great effect).
But, the Right/Left wing surfaces are mirrored for the upper and lower surfaces in this skin, so HOW did he get the insignia on the left/upper and right/lower surfaces only? Seems to me it should show up on both mirrored surfaces, not just one.
This is really a nicely done skin - you guys should examine it closely offline.
Thanks help!