Natick (Mass.) Contributory Retirement System is sending out RFPs in about a week for a new consultant, said Kathleen Bacon, director. The $60 million fund terminated H.C. Wainwright a few months ago because of differences of philosophy, Ms. Bacon said. The deadline for completed proposals is July 24, and the fund expects to have a new consultant on board by September. Also, the fund has put a hold on its search for a real estate manager until it hires the new consultant, Ms. Bacon said.