Each Pledgor shall pay promptly when due all taxes, assessments, and governmental charges or levies imposed upon, and all claims against, the Collateral, except to the extent the validity thereof is being contested in good faith and by appropriate proceedings and in which reserves or other appropriate provisions have been made or provided therefor; provided that each Pledgor shall in any event pay such taxes, assessments, charges, levies, or claims not later than five (5) days prior to the date of any proposed sale under any judgement, writ, or warrant of attachment entered or filed against such Pledgor or any of the Collateral as a result of the failure to make such payment.