Gosh darn it!
Began having the issue where one of the buttons stopped working when the lever was at full throttle and then came back to life when I eased off a little bit. Suspected the wiring, them being the known issue. So I opened it up to see what's going on since the warranty's long gone anyway and lo and behold. The wire in question had a really sharp kink in it and when I touched it, it just snapped in half. Guess at that point it held together with only rainbow dust and positive thoughts.
"Luckily" the particular button is the pinky switch (UP) at the back of the throttle. And the switch has always been System Map (up) and Galaxy Map (down) for me, so no massive hindrance there. I can live without it. That said, got to keep my fingers crossed rest of the wires stay in one piece, although the purple one next to it doesn't look to hot, so I can keep flying.
But it should be fixable even if it broke down completely. Came across this video where some guy replaced all the wires by cutting off the broken section and soldering in new ones. Just that I don't have a soldering iron nor am I very skilled at doing such things.
Still, bit of a bummer.