If any attorney is engaged by Lender to enforce or defend any provision of this Guaranty or to collect any sums owed by Guarantor under this Guaranty, with or without the filing of any legal action or proceeding, Guarantor shall pay to Lender, immediately upon demand all attorneys’ fees and costs incurred by Lender in connection therewith, together with interest thereon from the date of such demand until paid at the rate of interest applicable to the principal balance of the Note as specified therein.