I suspect Garmin might have removed disable power meter auto-zero in a firmware update on Fenix III.
Bugger
Ah, so fubar'd for fixed Powertap use?
Maybe. Even with autozero I've never had the mad increasing power over time error that you did.
@Dammit started
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I suspect Garmin might have removed disable power meter auto-zero in a firmware update on Fenix III.
Bugger