The f18 stem is exactly the same as the a10. I did a swap for a 15deg stem so I could run the f18 center stick. The disassembly is actually easier in some aspects, but harder in others.
Specifically, you only need to unscrew the bolts on the grip, not the screws on the button face. The hinge pin for the pinky lever is actually simple to pull because the o-ring comes off easier, unfortunately, the pinky setup is different, it uses an internal button on a pcb board and the lever has a spring that you have to screw around with. But it only took me about 10 minutes to do the swap.
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