It's mathematically impossible for the distribution of the dice to be even, since the random parts are taken from a bit stream (base 2), and dice are in base 6. If we had 8-sided dice to roll, it would be possible. However, there is bound to be a slight unbalance in actual distribution. However, how unbalanced it is, and which dice is favors (there will be 2 dice or 4 dice it favors, most likely), is determined by the actual equations used.
Discuss.
Also, lack, how exactly do you determine the value of each die, given the bit stream from random.org?