There's something funky going on with the sim texture, making a few colliders get stuck with a value above 252, even though there doesn't appear to be any in the image.
I've done some editing, and the pattern seems to be that large differences in a small area confuse the system somehow, boosting the value of certain pixels.
I settled on a couple of tries, one is the original file, but with a curve that caps everything over 250, the other is one where I tried to even up the symmetry a bit by overlaying a mirrored version of each part over each other, then added a bloom filter to smooth out transitions and catch stray edges. Feel free to use either one as you like.
Oh, and you may want to redo the sim joint build for the underwear with the "nearby joints" toggle set, or the ribbon falls off if someone turns the sim on.
Aaaand, while I'm at it, may as well throw in some presets I made, one for the intended Trety morph, and one that I made for my own attempt at Meridiana a while back, which should play better with appearances closer to the base. I had to go down quite aggressively on the distance scale to keep it from going baggy, so it could probably do with some more sim editing to keep it from hiking up so much, but I am out of time for today.
