I have played this challenge perfectly. Maintaining between 1920' and 1930' and have even used altitude autopilot at 1930'. I have played this challenge at least 20-30 times and the highest score I have achieved is 76%. Is this a glitch in the software or am I doing something wrong? I seen another person ask the same question and one person replied and said have no idea and are experiencing the same problem. I receive 100% for min altitude but at the most 60% for mean altitude. If this is a glitch I would hope the software designers would realease an update to correct this. Thanks in advance for any suggestions!