I broke another one of these:

This is the second one that the metal insert (I'm not sure what they are called) has pulled itself out of (after hitting a rock going about 10mph). What happens rather than the plastic just stripping, the metal insert pulls right out, still attached to the screw.
Anyone else had this happen? I've had no issue with the HobbyPro knuckle on the other side, just the Duratrax ones. That was my last Duratrax knuckle so no more inserts to come out and become non-fixable.

This is the second one that the metal insert (I'm not sure what they are called) has pulled itself out of (after hitting a rock going about 10mph). What happens rather than the plastic just stripping, the metal insert pulls right out, still attached to the screw.
Anyone else had this happen? I've had no issue with the HobbyPro knuckle on the other side, just the Duratrax ones. That was my last Duratrax knuckle so no more inserts to come out and become non-fixable.
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