Thanks for your time. I see the "grey triangles" in nifskope, no texture, for the BS generated models with breasts 100%, SSH 40%, gravity 70%. I will post a pic showing them.
It's not really big problem, they probably will be unnoticeable in-game. Just reporting them in case they are caused by an underlying issue that is not showing at stardard sizes and could be easily fixed. Please ignore if you cannot reproduce them or find the cause.
Hmm... I can't reproduce the grey triangles, but I do see a bit of clipping on the TG outfits on the left breast - mostly cause by that 70% gravity. Might that be it? Clipping can be addressed, so if it turns out to be clipping, there's a chance I can fix.