Attached Link: coat/sweater combo for the girl

I have an outfit I modeled myself, for the Girl.   I wanted to use it in Poser 6, and also hand it out with my other items for the Girl.

 The out fit consists of a skirt,( skirt was modeled by Gerald Day, and reused with his permission :)  ) sweater, and a blazer. I  wanted to use the cloth room on the blazer, as I did the sweater, but when I do, it goes thru the sweater and collides against the Girl. 

  As you can imagine, the poke thru is horrible then.

I've looked thru the buttons, and haven't found anything that will allow the blazer to hit the sweater.
Should I use the collision depth button for this?

Or is there another way I'm overlooking?

Thanks in advance for any help