So, this problem keeps coming up again and again in various forums dealing with the loved and, for the most part, forgotten system from West End Games, D6 System. The problem is the presence of the "Wild Die" that was introduced in Star Wars 2nd Edition. As usual, there isn't a whole lot of grey space in this debate... or shall we more accurately say "Love/Hate".
I created a small perl script that takes in the number of iterations and the number of dice that are part of the roll and outputs the list of target numbers that were rolled, how many times they were rolled and what % of the rolls do they represent. The script takes into account the result of the Wild Die. I settled on 1,000,000 iterations as it seemed to give a consistent sample response when run several times.