Jive turkey, I would guess that the 1/4" hole was the problem, creating a weak spot. If I made the gear wider and stronger there would be no weight savings, hence the reason most want them. I do not make the gear, Graphtech RC manufacturers the gear for me, TNT, Aeroworks and others. I designed the gear, Graphtech builds it. I am sorry yours broke, I will be happy to cut you a very special one time price for your bad luck. I have dropped mine in from 10 feet onto asphalt and they did not breat, but it did bend the 6/32 mounting bolt. I guess we all have different luck. Email me at [email protected], Jeff Williams