Mortgage lenders that have been enjoying a hefty 40 percent cut of mortgage insurance premiums through captive reinsurance agreements face growing pressure from private MIs that want to keep a bigger share of the premiums. GE Capital Mortgage Insurance Company has plans to limit the amount of premium it will cede to lender-owned units to 30 percent, down from the popular 40 percent deal. GE is following the example of Mortgage Guaranty Insurance Corp.,