Couldn't leave this behind without posting my experience for others who may find themselves in the same position:
If you only really want full support for PS2 games, don't get this flight stick. I've noticed so far that it mainly works (while in Mode 2, in which it emulates the original PS1 controller. AKA digital mode) for PS2 games that allow digital controls. Like moving your character with the D-pad, for instance (Armored Core 2, and Sky Odyssey are the ones that have worked successfully for me). If the game doesn't allow that, then the chances of it working at all are low. Though oddly enough, Ratchet & Clank: UYA seems to work in Mode 3 (in which the flight stick emulates the NeGcon, IIRC, or some other similar analog controller) and controls pretty decently.
Alright, now the silver lining: There are still PS1 games that support it (the Ace Combat games come to mind),
and i ended up buying a PS2 controller-to-PC adapter which allowed me to get it working for various space sim games, though it has a few quirks...
- In Mode 1 and 4, all of the buttons except the actual throttle & Joystick work. The latter 2 aren't picked up at all for some odd reason.
- In mode 2, everything except the throttle works and it seems you can reprogram most of the buttons, but as i mentioned earlier, this is Digital mode. Which means the joystick behaves exactly like a D-pad instead of an analog stick. Things can get a little messy when you need to make small adjustments to your aim and can't slightly tilt the stick without making the game think you're pushing it all the way.
- In mode 3, which is the best (in my opinion) despite it's downsides, the joystick is finally treated as an analog, the throttle works and the buttons technically all work, but there are about 4 buttons (two out of the four red buttons on the front of the throttle, and two out of the four gray buttons on the joystick. Also, excluding the 2 Triangle buttons that are on both sides of the joystick. Not surprised that those are the same) that are considered by Windows to be exactly the same as 3 other buttons...which makes those first 4 buttons somewhat pointless. Still, that leaves you with 13 other independent buttons (and the throttle/joystick) that work fine and can be remapped in games like Freespace 2, and the X series (only ones i've tried so far). The hat switch also technically has 8 directions, but hitting the extra 4 without mashing one of the main 4 in the process can be a hassle.
- One more odd thing regarding the Axis' when looking at them under Window's "Devices and Printers" area. the joystick's Y Axis can't seem to go all the way up or down (it can go most of the way, though. About 189 and 68 respectively) unless the "Z-Axis" slider (that simulates the joystick being pushed up or down, for some reason) that's on the base of the joystick is pushed in that direction to "help" it get there. I rarely mess with it, though. And that minor drawback hasn't majorly affected me yet. Also, the Rz & Z Axis' box (representing the throttle in Mode 3) is permanently pushed to the left for some reason. Therefore in some games (X3 in my experience) that allow the use of a throttle for certain functions, if that direction is mapped by default, your camera will just continuously spin. All you have to do is just find it and un-map it ingame and the problem should disappear.
Overall, no ragrets.