If the appropriate director or examiner finds that a pleading does not substantially comply in all material respects with the Commission's rules, notice of the deficiency or deficiencies will be provided to the filing party. Unless precluded by operation of law, the party who filed the pleading shall thereafter have the right to file a corrected pleading. The filing of a corrected pleading shall not be permitted to delay any proceeding unless the appropriate director or the examiner determines based on evidence submitted by the filing party that such delay is necessary to prevent an injustice or to protect the public interest.