I just got everything installed to P3Dv5 (only took me two years to give in), and going over to LOWI to see the eyecandy was when I noticed that it wanted me to select a stand even though i already was on one (stand 6), checking the AFCAD GSX was using in ADE shows all parking spots there. GSX only shows Gate 2 and 2 regular parking spots for GA available, as far as i've tested this does not happen on any other airport, and i have tried reinstalling.