It is agreed and understood that otherwise subject to the terms, exclusion, provisions and conditions contained in the policy or endorsed thereon and subject to the Insured having paid the agreed extra premium, exclusion C under Special Exclusions to section I of the Policy shall be deleted and exclusion d replaced by the following wording:
“d the cost of replacement, repair or rectification of loss of or damage to items due to defective material and/or workmanship and/or faulty design, but this exclusion shall be limited to the items immediately affected and shall not material and/or workmanship and/or faulty design.”