sign up for the wattage forum and read these four threads:
https://groups.google.com/forum/?hl=en&fromgroups=#!searchin/wattage/quarq$20drift/wattage/SAYz6itbAlQ/5mOXktng8qAJ
https://groups.google.com/forum/?hl=en&fromgroups=#!searchin/wattage/quarq$20drift/wattage/JUxaICGmYaA/Ze-8IztgzOgJ
https://groups.google.com/forum/?hl=en&fromgroups=#!searchin/wattage/quarq$20drift/wattage/9GUTjK84Ed8/JKuvUmOCJUIJ