Do Not Open Your Cases Anymore

[JaySki]

Hobby Rule #1.... It isn't cheap. If you can't afford it.. as expendable money.. might want to rethink your hobby.
Hobby Rule #2... They break. And if you are racing, you better expect to have spares, especially the vulnerable stuff.. In this case, ESC, Servos, Push rods, Pinions, Spurs, drive shafts, etc... Unless you are OK with it breaking at a race and calling it a day. And that would apply to nearly anything you are DEPENDING on to stay working.
That's just Murphy's law. If it can break it will.. Therefor, have extras.
So, empathy.. Yea.. None. It's a hobby...