Quote - I have a couple more questions.  Attached is a recent effort.  I'm getting a rather glaring and embarassing "poke-through."  Her top appears fine in the DS preview but obviously LUX seems to have X-ray vision.  How do I fix this?  Is this where D-formers come in?

 

I can't see the attached image !? but from your description I can say you can try with morphs or scaling of the affected area...

...but since the image and render looks fine in DS I believe you have a smoothing modifier on the clothing... you could either set this to interactive or bake the smoothed morph before you call reality... however - do NOT save the scene after you have baked the morphs... do it before so you can go back to that state.

Hope this helps.