2.15 For a full reassessment of soft services requirements, the Authority should allow sufficient time at an early stage in the project plan to review the specification thoroughly and to agree any changes with the Project Company before the value testing exercise begins. This is likely to add two to three months to the process. It is always possible to make changes to PFI contracts without a value testing exercise; however this process offers an opportunity for a full appraisal of service needs and an assessment of value for money.