I set a waypoint and averaged it. It seemed to hint that accuracy was down to 3ft which seems pretty good for my base waypoint. However, when I did a test route the whole track seemed shifted about 30yds to the west with respect to the map and route as marked. This was confirmed by uploading my track back onto the original map route plot. All previous tracks and plots have matched the map perfectly (except where I wandered from the plotted route).
Has waypoint averaging reset the calibration of my eTrex20 for everything?
Can I get back to where I was with routes and plots fitting the map and ground?
