Q key issue using X-Arcade

[Quentaeron]

So, I built myself a set of controls using the X-Arcade DIY kit with a trackball, so for all intents and purposes I have a Tankstick, in a dedicated MAME cabinet.

Everything works...except the P2 Button 3 (Q) key when running MAME games. I've read the other threads concerning the Q+S issue, and associated workarounds, and here is the relevant snippet from my ahk file:

;------------------------------------------------------------------------------;
;                                 MAIN SETTINGS                                ;
;------------------------------------------------------------------------------;

;[uNIVERSAL HOTKEYS]            ;SEPERATE MULTIPLE KEYS WITH &(ampersand) up to 2 keys.
exitScriptKey   = ~3 & ~4         ;Secret hotkey(s) to exit script if needed
                               ;Not to be confused with exit emulator keys

exitEmulatorKey = ~1 & ~2           ;This key/key combo will close any emulators
                               ;that do not have normal closing methods.

toggleCursorKey = t             ;hotkey(s) to show or hide cursor if needed
                               ;when hideCursor below is true

As you can see, nothing in the ahk file references Q, so I'm baffled as to what to do next. I've tried not using Hyperlaunch to execute the command line MAME I'm using, but MAME hangs when I do so. I'm using MAME 0.137, with the parameters "%file& -skip_gameinfo -nowindow -ctrlr X-Arcade".

Any help would be greatly appreciated...

[Quentaeron]

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