Get your taxes done using TurboTax

@nexchap  Here is the situation. 
My purchase price was $21487. I sold at $21175.  (Loss of -312)
My brokerage reported the cost basis as 21487 in Form 1099-B Box E (Cost Basis not reported). 

Form K-1 reports my cost basis as $19576. 

In TT I entered $19576 as cost basis in Form 1099-B, Box E (Gain of $1599 - which is correct). For K-1 I had entered in 2 methods.  The Gain/Basis method generates Form 4797 and adds $-312 to Schedule D, which reduced my tax.

With Sale price and Basis same, I don't have that problem. 

Thanks for your guidance.

 As described by you earlier.My own method.