Note:  that is indeed a good thread, 3Doutlaw.

     MrSparky:  your room appears to have the visible lights, but no IDL emitters.  Or perhaps you don't have IDL engaged in the render settings - click the circular "radio" button to manual settings, and when that version of the render settings window appears, click acquire from auto.  PP2012 would also have a setting in the right column for gamma correction;  tick it to engage it, and the gamma correction factor should be 2.2

.     Poser's IDL does not respond in realistic proportion to a softly glowing object (the visible light panel in your scene);  you must also use a much brighter unseen emitter to compensate;  if you can use a larger surface area emitter, so much the better, as this will even out the lighting.

     I'll nose through that zip file and see what's going on.

     I like the idea of the central flame cone for the jet exhaust;  that has potential.  It can be part of the same prop as the jet blast/smoke trail "aura", but a different material zone.  It will still need a separate unseen IDL emitter (also with two material zones, for cone and trail).  Give me a bit of time to experiment on materials...

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5