[HoE] Pyro Question

[Matthew Steflik <grifflik@stny.rr.com>]

    I have a question regarding the Psyker power, Pyro.  The description
in BB states that "it flares on each of the controller's  actions,
causing 3d6 damage to its current target" and "if the Marshal is keeping
track of target's wound areas...the damage is centered on one body area
of the controller's choosing".  Does this mean the Psyker can, in
effect, generate a "head-shot" simply by designating the head as said
"body area" upon successfully using the power and thus doing an
additional 2d6 of damage?  At a base TN of 5 with no sort of "called
shot" modifier?!? If the Psyker rolled well for initiative and
successfully used the power on the first of, say, 4 actions, this would
mean 5d6 points of fire damage to the head of the target four separate
times over the course of the round based on one pretty easy die roll for
two lousy strain (not to mention the 1 in 6 chance of having clothing,
etc. catch fire as well each time it flared)! Yowch!  Am I interpreting
this correctly? Perhaps the damage bonuses for head and gizzards don't
count in this case?  Or perhaps you roll body location as normal for the
first action (with normal called shot modifiers) and then the controller
could just move the flame to an area where it would do more damage on
their next action? Are there rulings on this type of thing somewhere?  I
need some feedback.