1206.58—What must I do if ONRR finds that I have not properly determined value?
        
        (1) 
         Pay the difference, if any, between the royalty payments you made and those that are due, based upon the value ONRR establishes; and
    
    
    
        
        (b) 
         If you are entitled to a credit due to overpayment on Indian leases, see  § 1218.53 of this chapter. The credit will be without interest.