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frank9755-
Did you leave from the same place?
The fact both head units reported the same junk sounds like you, say, left from a warm building and went and found yourselves a low pressure system or something and so both units reported the same thing.
Google your model - could be an issue with that unit but I don't know about it.
hippy
Yeah, just checked her ride in Connect and the starting elevation is the same and the top of the climb elevation is within 1m.