The Borrower will, and will cause each of its Restricted Subsidiaries (other than Immaterial Excluded Subsidiaries) to take such action from time to time as shall reasonably be requested by the Administrative Agent or Collateral Agent to effectuate the purposes and objectives of this Agreement and to confirm the validity, perfection and priority of the Lien of the Security Documents. Without limiting the foregoing, but subject to the 65% limitation in the last paragraph of Section 6.13(a), in the event that any additional Capital Stock shall be is-sued issued by any Domestic Subsidiary or First-Tier Foreign Subsidiary (other than an Immaterial Subsidiary), the Loan Parties agree forthwith to deliver to the Collateral Agent pursuant to the Security Agreement the certificates evidencing such shares of stock (if any) , accompanied by undated stock powers executed in blank and to take such other action as the Administrative Agent or Collateral Agent shall request to perfect the security interest created therein pursuant to the Security Agreement.