Unfortunate this is normal....its called bleeding through.
The sleeves for instance can overule other parts of the alpha or vice versa.
Another example are trousers, the are messed up bad with these settings.
I discovered you can reduce the bleeding alot when you splitup you meshgroups like in a left and right side, top and bottom or sleeves seperate.
Just give the new meshgroups the same name as they will share the same texturefile.
You can fiddle with the opacity settings, sleeves13/11, top 9/7 and skirt or pants 5/3
If you open one of my multi's or alphadresses you will see how.
Now, this is is the easy part
It gets complicated when there are also morphs involved, you have to splitup those also.
One of the most complicated meshes i ever did ended up with a huge ammount of meshgroups but does support both transparancy and solid textures for normal/fat and pregnant state.
34A Fullbodyoutfit's