hmm.....Let me fire up some real world weather..... <<UPDATE>> I got this to reproduce itself, let us get back to you after digging some more...... Nice area to fly in BTW..... <<update, update>> CptCaptain thanks for the help, good news is we will have a fix in the upcoming V2 release.... What you are looking at is how XPX sends weather information to our clouds, in this case real world weather is sending two identical cloud layers at different altitudes....... hang tight