1)   Arc Modifiers:    suppose a weapon system has the following stats (got this off the drydock program)

7× Laser Batteries (Acr)     [FF6][FP4][FS4]
                                           [AP6][AS6]       2-4-6     5     4     3     2     1     1     1     0     0     0     0     0

If I'm reading this correctly when firing the FF gun you automatically have a modifier of -6.  So (assuming no other modifiers) at medium range or longer you cant roll anything.  ???    Even at short range you are rolling only 1 die.
This cant be right.  I'm totally confused.

2)  assuming the same weapon above- what does having 7 of these lasers do for you?  Do you pool all the dice together or roll each weapon separately?    Either way what is the advantage of having multiple weapons in a battery instead of one big one?

Sorry if these are stupid questions.  I wish the rul set came with an FAQ or broader example of play.