[HoE] Junker construction question

[Draxus@aol.com]

Hi all. Just picked up HoE last week and have some
questions about how constructing Junker equipment works.
I had to say I was disappointed with the Junker section
in the book. Not only do we only get two powers, but no
examples of device construction. Oh well. So anyway, this
is how I THINK it works, if I'm wrong please let me know.

Doc finds himself dealing with Abomidable Snow Beasties
and decides he needs a flame thrower to teach them the
error of their ways. 

THEORY
   Flame thrower, throws flame in a big blast using alcohol for fuel.

POWERS
	Damage. Nothing fancy here.

BUY POWERS
	Damage 4d10 (Snow Beasties are tough)
	Energy Damage (its flame, right?) +25%
	Armor Piercing 2 (burns through armor) +20%
	30 degree cone 20 yards (Doc's not a good shot) +25%
	Speed 1 +20%
	ROF 2 (there's a lot of them) +25%

So we have a total modifier of +115%. 4d10 costs 100, so the total
is 215.

COMPONENTS
	Structural 1/20 = 11
	Mechanical 1/25 = 7
	Electronic 1/50 = 4

DRAIN
	1/50/shot = 4 drain per shot

BUILD IT
	It's going to take 2d4 weeks with a TN of 15 to build.

Gee, too bad the beasties are attacking tomorrow. Oh well.

My other question is say Doc built this flame thrower before.
Can he reassemble it faster? With an easier TN?

Andrew Ross