I can’t find my picture of the damaged. This is the metal concept replaced. On the stock piece the bearing would actually melt the plastic, causing the gears to slip and grind. It happened to most of the originals. I don’t know if it’s been fixed since release. Running 2s it held up about 20 runs I think. Only took a few 3s runs to cause the damage on mine. I usually avoid going aluminum, but in this case it was a good choice. Wasn’t cheap, don’t know if price has changed since then.