Any idea how to deal with 2 powermeters that are 12% off?

Hey Andrew. Dealing with power meters that are very different is a challenge. We are considering new features to help address but for the moment nothing natively on the system can be use to scale power data based on different power meters. External tools like www.fitfiletools.com have the capability but it is a bit cumbersome to have to use that all the time. If you only have a few activities here and there you can use it. Another approach is the manually set the signature on these activities. Sorry we don’t have a simpler approach for you at the moment.