i believe the definiton settings for a disruptor blast are here
def Create(pTorp):
	kOuterShellColor = App.TGColorA()
	kOuterShellColor.SetRGBA(0.172549, 0.172549, 1.000000, 1.000000)	
	kOuterCoreColor = App.TGColorA()
	kOuterCoreColor.SetRGBA(0.639216, 0.639216, 1.000000, 1.000000)
	pTorp.CreateDisruptorModel(kOuterShellColor,kOuterCoreColor, 11, 0.6) 
this is from the Card Hybrid, which fires the oversized slow pulse.
11, 0.6
bold i believe is the physical size of the shot
Italic is, i believe the core scale
try playing with these two numbers to shrink the size of the pulse itself to make tit  look like it's coming from the wingtip instead of the middle of the wing.
note:try using the MPE only to make sure of your positioning on the model.  i use it similarly to redo weapon and Damage Icon's item placements.