Yes, use the + offset. I KNOW it seems
counter intuitive to ADD voltage, but just trust me. I won't lead you wrong. It's not ADDING to the Auto voltage that you already see. It WILL be lower (even +0.005 will probably be too low). Just try it.
Edit: Actually you MAY be able to use a - offset... Got this thread confused with another offset thread that I helped with, lol. It still applies though.