This is a profile I made for my GSX Pro for KSNA based off the UK2000 scenery. I can't guarantee it will work with default KSNA since I use the UK2000 KSNA map. I fixed the gate positions for the airline terminals. I also updated the pushback profiles for the gates and made the descriptions a bit easier to understand (End Facing Left/Right). I may update the ramp parking as well as GA and VIP at a later date but since I mostly fly airliners out of the terminals, this is the work I've done so far. Due to the placement of assets by the UK2000 team, you may notice that at some gates, the vehicles overlap. If you do not like this, you are free to edit the vehicle positions by using the GSX editor and placing vehicles wherever else you'd like.
To add this profile, go to the AppData\Roaming\virtuali\GSX\MSFS folder and drop it in. I also recommend excluding KSNA from the list of airports to add the custom jetways in the GSX configurator.
