So it looks like I shaved 4 seconds off of Maes' Mark-II-1:
I'm not really sure HOW I shaved off 4 seconds; I just studied the reactor setup and figured out the basic idea, then went around playing with placement. *shrug*
You can put another IHD in the empty space if you want, but it doesn't seem to make much difference.
my last work - http://www.talonfiremage.pwp.b…1k101010037ps011111101110.