Salute Tec and Mar,
Mar, you are going to be limited in the glow effect you're looking for because of the gray area that will be in the light fade. Transparency is 176-176-176 in the game. Fading to the black background will generate sections with that transparent color. This will, in turn, create the original problem you experienced and approached the forum about (the holes.)
I would recommend dropping the edge blur and using a 1 pixel wide green line around each individual circle that is a solid color. You could, from outside in, use a 1 pixel green, inside that 1 pixel yellow, inside that original green color. This can give the "illusion" of a slight blur at distance. Keep in mind this noseart is a minuscule size in the game. Detail is lost at any range unless you blow it up yourself from f3 view. Remember that noseart is a reduced representation of your unit. Lots of detail is generally lost at reduction, even blurs.
ReDhAwK