How do I prevent an armor piece from conforming to a preset in Outfit Studio?

[thehangman23]

I am conforming the Bless Online armor pieces to my custom BodySlide preset. There is a loincloth part of the outfit I'm currently editing that features HDT physics. When I conform the sliders of the armor to my preset, everything turns out perfectly except this particular piece. The area of the loincloth around my preset's rear conforms in a very ugly and unnecessary way, with a jagged seam separating the parts with skeletal weighting and HDT weighting.

 

Is there a way that I could isolate this particular piece from conforming when I load my custom preset? I want to have every other piece conform to the sliders except this one, which I will edit manually with brushes.

[LB89]

You can mask the problematic parts, then the sliders wont affect them.