Ten Senators wrote the head of the Risk Management Agency last week, urging cooperation as the Agency seeks to renegotiate the contract between the government and private companies that administer the federal crop insurance program.  The Standard Reinsurance Agreement (SRA), as the contract is known, is set to be rewritten under new rules laid out in the 2008 Farm Bill. Specifically at stake in the process is the handling of administrative and operating reimbursement rates that, if cut inappropriately, could affect the level of coverage and service producers experience.