Have an lb7 had a few bad injectors was getting fuel in the oil so I replaced all 8injectors. Still had fuel in oil so did all new return lines. Still was getting fuel in oil so did 8 more injectors all new! With new return lines and ran truck with valve covers off to make sure return lines weren't leaking. Still getting fuel in oil. Pulled cp3 and put different one in and still getting fuel in the oil at a loss here. Any one have any more opinions?