TDS on Provisional Expenses

Arun (A.M. - Accounts) (39 Points)

10 December 2007  
On 31-03-07, We made some provisions for professional fees.
We deducted TDS @ 5.1% at Rs. 6,00,000/-
Now on receiving final invoices dated : 12-11-2007 party has given invoices of Rs. 5,00,000/- only and current rate of TDS is 10.3% for professional fees.
Now, What will be our treatment of TDS on these invoices?