So, here I am. 15 years old, and broker than my stepdad's back. I saved and got a mamba, dropped it into my combination propulse/RC18B, cruise around a bit, and BAM! There's this horrid crunching noise, the permanent magnet in the motor blew up. Any recommendations on where I can get another brushless rated near 6800kv? I'm dirt poor at the moment, so about $60 is my limit...