Community mortgage lenders want the Federal Housing Finance Agency to put an end to pricing disparities caused by mortgage insurers offering discounts to Fannie Mae and Freddie Mac lenders based on their size or volume. And they recommend doing so in the same manner the agency solved pricing disparities over guarantee fees. The Community Home Lenders Association wrote the FHFA last week requesting that Director Mel Watt investigate the practice that the trade group says has become more prevalent. CHLA said it puts small lenders and their borrowers at a disadvantage. As a result, some individual CHLA members are even boycotting private MIs that engage in volume discounts.