@jerry 

In Setting > Options > Tax Return > Federal Tax Options > 5 up from the **bleep** to NOT a community property state.    Make sure you do have the correct things tagged a T & S, then split the returns. 

This 'should' work for the LLC problem; not sure about all the rest of your clients income items.  

I use this to figure the "attributes" for married clients that just have to know who owes how much/who gets how much of the refund.

Good luck