well, you have some point here. i've experienced similar problems. it was showing no downhill or uphill, just straight lie, i dinged a roll to the hole from 13 ft, it was running pretty gr8 and on the last 1 ft it went to the left. there was a lost birdie...
also interchangeable lies are stupid. 23 ft from hole, 5 ft uphill right, 7 ft uphill left, 7 ft downhill right and the last 4 ft biiiig time uphill right. how the */#$ am i supposed to aim that one?!!