Today while trying to find a paved airstrip in Reflex XTR I discovered that the fields are mostly all grass.
There are very few paved airstrips and the ones I found downloaded and installed do not function correctly with planes.
I can ignore the errors and get them to work with Helicoptors but with airplanes, the wheels sink into the pavement and generally have a hard time of it. RealFlight sometimes had this type of problem and I found a way to correct it, In Reflex XTR I do not yet know how to correct this issue.