Sorry I had the reply notification off.   You can easily change things like that for yourself with S4Studio.    Open the file in S4Studio ->  click on "warehouse" -> click on the first "CAS Part" on the left side, -> then on the right side change the "TattooTorsoFrontUpper" in the "AdditionalTextureSpace" to a slot you want to use. Also edit the "TattooTorsoFrontUpper" in the "Body Type" to the same slot.    Do that for the other "CAS Part" too.