My Lower Unit On My 85 Force Motor Was Damaged Prior To My Buying It. I Had It Welded And Checked The Impellar And Seals Which All Seemed Ok. We Rode Around For A Couple Hours And When I Got The Boat Home I Checked The Oil In Lower Unit And It Was Milky. We Put In New Screws For The Fill And Vent After The Weld Job. We Put The Lower Unit In A Barrell Of Water And Ran It For A Few Minutes And No Leak In Lower Unit. Next We Put The Muffs On And Got Water To The Pump And There Still Was No Leak In Lower Unit. Can Someone Shed Some Light On What I Need To Do Next. Almost Forgot We Also Check Seal At The Prop And It Looked Good. Thanks Ron