How do you apply the Genesis 8 skin to the VaM figure (which is Genesis 2)?
Do you use the Genesis 8 skin clothes,
or do you apply a texture that was converted from Gen8 to Gen2?
-As you may know, there are several DAZ “sub figures“ for Genesis 8 (Gen2 has this, too). The skin of, for instance, „Stephanie 8“ , „Monique 8“ or whatever, does not fit to a Gen8 base female. You will see small gaps at the texture seams.
I havn‘t try the Gen8 clothes so far, but I bet they are using the UV map of Gen8 base female.
If you look at the specifications for your skin at the DAZ store, what figure this was made for?
-Maybe the Gen8 clothes are slightly defective on some custom looks?
-If you are using a texture that was converted from Gen8 to Gen2, then switch the underlying VaM skin to „Base Female“. Otherwise it may use an uncompatible UV set, like I explained above.