Thanks for the help to come.
I have followed Rodeo airport design to the T. But when i converted, all 3 things are wrong
yssy__airport__rwy cuts a hole in my scenery and is not there Fixed! first video says __rwy but the latest says __runway.
yssy__airport__outside is way below the scenery It looks like its doing what I want, which is to flatten all the bumps. Do we need to load a texture into this to make it not transparent?
yssy__airport__decals object files i placed are sitting where my Lat Long reference Cord are and not in the position they are in AC3D.
I give up.