59.2. Subject to a decision of a court or other authority, a member shall not agree on a contingent fee with a client for a professional service not referred to in section 59.1 when such an agreement is liable to:(1) impair or be perceived as impairing his professional judgment or objectivity in the performance of the professional services provided for under paragraph 1 of section 59.1;
(2) influence or be perceived as influencing the results of a compilation engagement.