Using a mechanical pump on a 440 and using original 5/16 fuel line as a return. Thinking about using a filter with the return built in and also using the 5/16 line for a small electric pump to refill the carb on a hot soak. Any problem with connecting the the bypass line with the line from the electric fuel pump as it will only be used to refill the carbs on a hot soak? I would have to plumb the return line before the electric pump to allow fuel to resurk to the tank.