Recently purchased El Hierro from Aerosoft (Simwings product) We have the same problem as per Maderia, i.e. GSX items are running around under Apron/taxiways. I know this because I can see the top of stairs moving into position. I appreciate this is not the fault of GSX, it's an elevation problem, but a person called 'ricardo_r' produced a BGL file that corrected the problem for Maderia. I am wondering if he (hope hes tunning in) might be able to help with El Hierro? I don't have a clue how to do such things!!