Hi.
The average 50 cent to 75 cents dice, if one inspects them closely, are sometimes not perfectly shaped. For example, I got some white and red dice in my Revised set newly purchased this March. Now, one of my white dice in the game-set is slightly trapezoidal shaped on three sides. So some of the dice rolls might be slightly skewed.
I’m aware that some of my smaller six-sided dice consistently give more 4’s, 5’s, and 6’s than one’s, two’s, or three’s, so I’m pretty sure that one or more of these dice are also slightly denser on one side than the other. One way to identify these dice is to roll one die multiple times and check the frequency for each number.
The larger, red casino dice are supposed to be more random than the inexpensive 50 cent dice available at most gamestores.
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If one gets four sixes and two ones on the first roll, then 2 sixes and 4 ones on the second roll, the problem might be with the technique used to roll the dice. One of my fellow players tended to flip his dice results over like pancakes, because the dice weren’t really agitating well enough in his hands. Some possible remedies: buying more new dice so the same dice don’t get rolled over and over, rolling smaller handfulls of dice, using a different surface for the dice to bounce on, or varying the method of rolling the dice.
Other options if the dice are skewed: getting a little more of the units that hit with a three’s or four’s, and less units that hit on a one or a two.
Dunno if fighting three small battles is better than consolidating for one big battle, if the dice rolls are bad.