spur gear issue

I emailed evike, and got a response and am emailing further with this picture attached. But I know, I'm an idiot for taking apart my gearbox. That being said, I can put it together again. I'm taking it to the local tech, tomorrow.

Is this gear lost? Because I'ma be mad that motor must've been torqueing like crazy, and this gear is made out of steel for crying out loud. But a M120 spring made it break. What gears shoud be able to take a m120, anyways? Anyone got a recommendation for a good gearset to use instead of the stock one?

Done