I have a pair of Rally 200s paired to an old Edge 520 that I primarily use on the track, it works great most of the time. However, when I sprint the watts and cadence briefly (1 second?) drop below reality (fixed gear bike, can't be accelerating with drastically reduced cadence / power). I recalibrate every ride and I've tried repairing a few times with no change.
Has anyone seen similar issues? Any suggestions on fixes?
