The Federal Home Loan Banks still have some work to do to assert their place in the mortgage purchase market as their flagship program continued its downward spiral during the first six months of 2005. According to recent data released by the FHLBank of Chicago, the Mortgage Partnership Finance program garnered only $1.9 billion in new business during the second quarter of the year. That marked a 34.5 percent decline from the $2.9 billion in mortgages…