Well turns out heres an easier fix now. HPI Octane gears are hardened steel and work as replacements. Hpi111167 and hpi111169. Pic courtesey of Llcoolskillet.
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Nice write up. Much better than the one I did. The pics are fantastic. Good job.
Need to stickey this. I know a ton of people have done it. I would like to see how it holds up to a Flux.