Town of Plymouth (Mass.) Retirement System is searching for an investment consultant for the $112 million fund, said Wendy Cherry, assistant director. Fund officials are conducting the search because the plans current consultant, Kevin Leonard at Segal Advisors, is leaving, she said. Segal is invited to rebid. Firms should contact Debra Sullivan, Plymouth board administrator, to receive the RFP. Proposals are due at 4 p.m. EST Nov. 1. A selection is expected in December.