[Jeff Waegelin]

I just want to say that they did not fail under "normal" use, they failed during a test in which I tried to get them to fail.

If they can fail in a test, there's a decent chance they can fail in a real situation, too... Wouldn't you rather fix it now, instead of hoping these same circumstances can never repeat themselves in competition?

Extra chain reduction and some surgical-tubing counterbalancing could solve your problem. BaneBots gearboxes work much better when you treat them nicely...